#0502 · Generation V

Dewott

Water · Discipline Pokémon — first seen in Generation V.

Just:

Showing the official games. Pick a ROM hack to see how it changes this Pokémon, or compare all of them.

Base stats

Stat	Base	Min	Max
HP	75	260	354
Attack	75	139	273
Defense	60	112	240
Sp. Attack	83	153	291
Sp. Defense	60	112	240
Speed	60	112	240
Total	413

Min and max are at level 100: the minimum is 0 IVs, 0 EVs and a hindering nature, the maximum 31 IVs, 252 EVs and a beneficial nature. Shedinja's HP is always 1 whatever the formula says.

Type defences

Damage Dewott takes from each attacking type.

×2

GrassElectric

×½

SteelFireWaterIce

×1

NormalFightingFlyingPoisonGroundRockBugGhostPsychicDragonDarkFairy

Evolution

Oshawott#0501

Level 17

Dewott#0502

Level 36

Samurott#0503 Level 36 in Hisui

Hisuian Samurott#0503

Methods are the current official ones. A ROM hack may change them — trade evolutions especially; the guide table below says which do.

In the ROM hacks it evolves differently

Each guide's own line, in the words its creator published.

In Elite Redux

Oshawott

Evolves into Dewott at level 16

Dewott

Evolves into Samurott at level 36Evolves into Samurott (Hisui) at level 36

Samurott

Mega Evolves into Samurott Mega holding the Samurottite

Samurott Mega

Moves by official game

Level-up, TM/HM, tutor and egg moves exactly as each game has them. The newest game this site covers is open; the rest fold out.

Ultra Sun / Ultra Moon18 level-up · 29 TM/HM · 8 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Tackle	Normal	Physical	40	100%	35
1	Tail Whip	Normal	Status	—	100%	30
1	Water Gun	Water	Special	40	100%	25
1	Water Sport	Water	Status	—	—	15
5	Tail Whip	Normal	Status	—	100%	30
7	Water Gun	Water	Special	40	100%	25
11	Water Sport	Water	Status	—	—	15
13	Focus Energy	Normal	Status	—	—	30
18	Razor Shell	Water	Physical	75	95%	10
21	Fury Cutter	Bug	Physical	40	95%	20
26	Water Pulse	Water	Special	60	100%	20
29	Revenge	Fighting	Physical	60	100%	10
34	Aqua Jet	Water	Physical	40	100%	20
37	Encore	Normal	Status	—	100%	5
42	Aqua Tail	Water	Physical	90	90%	10
45	Retaliate	Normal	Physical	70	100%	5
50	Swords Dance	Normal	Status	—	—	20
53	Hydro Pump	Water	Special	110	80%	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM01	Work Up	Normal	Status	—	—	30
TM06	Toxic	Poison	Status	—	90%	10
TM07	Hail	Ice	Status	—	—	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM100	Confide	Normal	Status	—	—	20
TM12	Taunt	Dark	Status	—	100%	20
TM13	Ice Beam	Ice	Special	90	100%	10
TM14	Blizzard	Ice	Special	110	70%	5
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM32	Double Team	Normal	Status	—	—	15
TM40	Aerial Ace	Flying	Physical	60	—	20
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM48	Round	Normal	Special	60	100%	15
TM54	False Swipe	Normal	Physical	40	100%	40
TM55	Scald	Water	Special	80	100%	15
TM56	Fling	Dark	Physical	—	100%	10
TM75	Swords Dance	Normal	Status	—	—	20
TM81	X-Scissor	Bug	Physical	80	100%	15
TM86	Grass Knot	Grass	Special	—	100%	20
TM87	Swagger	Normal	Status	—	85%	15
TM88	Sleep Talk	Normal	Status	—	—	10
TM90	Substitute	Normal	Status	—	—	10
TM94	Surf	Water	Special	90	100%	15
TM98	Waterfall	Water	Physical	80	100%	15

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Snore	Normal	Special	50	100%	15
Icy Wind	Ice	Special	55	95%	15
Iron Tail	Steel	Physical	100	75%	15
Helping Hand	Normal	Status	—	—	20
Covet	Normal	Physical	60	100%	25
Water Pulse	Water	Special	60	100%	20
Aqua Tail	Water	Physical	90	90%	10
Water Pledge	Water	Special	80	100%	10

Sun / Moon18 level-up · 29 TM/HM · 1 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Tackle	Normal	Physical	40	100%	35
1	Tail Whip	Normal	Status	—	100%	30
1	Water Gun	Water	Special	40	100%	25
1	Water Sport	Water	Status	—	—	15
5	Tail Whip	Normal	Status	—	100%	30
7	Water Gun	Water	Special	40	100%	25
11	Water Sport	Water	Status	—	—	15
13	Focus Energy	Normal	Status	—	—	30
18	Razor Shell	Water	Physical	75	95%	10
21	Fury Cutter	Bug	Physical	40	95%	20
26	Water Pulse	Water	Special	60	100%	20
29	Revenge	Fighting	Physical	60	100%	10
34	Aqua Jet	Water	Physical	40	100%	20
37	Encore	Normal	Status	—	100%	5
42	Aqua Tail	Water	Physical	90	90%	10
45	Retaliate	Normal	Physical	70	100%	5
50	Swords Dance	Normal	Status	—	—	20
53	Hydro Pump	Water	Special	110	80%	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM01	Work Up	Normal	Status	—	—	30
TM06	Toxic	Poison	Status	—	90%	10
TM07	Hail	Ice	Status	—	—	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM100	Confide	Normal	Status	—	—	20
TM12	Taunt	Dark	Status	—	100%	20
TM13	Ice Beam	Ice	Special	90	100%	10
TM14	Blizzard	Ice	Special	110	70%	5
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM32	Double Team	Normal	Status	—	—	15
TM40	Aerial Ace	Flying	Physical	60	—	20
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM48	Round	Normal	Special	60	100%	15
TM54	False Swipe	Normal	Physical	40	100%	40
TM55	Scald	Water	Special	80	100%	15
TM56	Fling	Dark	Physical	—	100%	10
TM75	Swords Dance	Normal	Status	—	—	20
TM81	X-Scissor	Bug	Physical	80	100%	15
TM86	Grass Knot	Grass	Special	—	100%	20
TM87	Swagger	Normal	Status	—	85%	15
TM88	Sleep Talk	Normal	Status	—	—	10
TM90	Substitute	Normal	Status	—	—	10
TM94	Surf	Water	Special	90	100%	15
TM98	Waterfall	Water	Physical	80	100%	15

Move tutor

	Move	Type	Cat.	Power	Acc.	PP
	Water Pledge	Water	Special	80	100%	10

Omega Ruby / Alpha Sapphire18 level-up · 34 TM/HM · 8 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Tackle	Normal	Physical	40	100%	35
1	Tail Whip	Normal	Status	—	100%	30
1	Water Gun	Water	Special	40	100%	25
1	Water Sport	Water	Status	—	—	15
5	Tail Whip	Normal	Status	—	100%	30
7	Water Gun	Water	Special	40	100%	25
11	Water Sport	Water	Status	—	—	15
13	Focus Energy	Normal	Status	—	—	30
17	Razor Shell	Water	Physical	75	95%	10
20	Fury Cutter	Bug	Physical	40	95%	20
25	Water Pulse	Water	Special	60	100%	20
28	Revenge	Fighting	Physical	60	100%	10
33	Aqua Jet	Water	Physical	40	100%	20
36	Encore	Normal	Status	—	100%	5
41	Aqua Tail	Water	Physical	90	90%	10
44	Retaliate	Normal	Physical	70	100%	5
49	Swords Dance	Normal	Status	—	—	20
52	Hydro Pump	Water	Special	110	80%	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM06	Toxic	Poison	Status	—	90%	10
TM07	Hail	Ice	Status	—	—	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM100	Confide	Normal	Status	—	—	20
TM12	Taunt	Dark	Status	—	100%	20
TM13	Ice Beam	Ice	Special	90	100%	10
TM14	Blizzard	Ice	Special	110	70%	5
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM28	Dig	Ground	Physical	80	100%	10
TM32	Double Team	Normal	Status	—	—	15
TM40	Aerial Ace	Flying	Physical	60	—	20
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM48	Round	Normal	Special	60	100%	15
TM54	False Swipe	Normal	Physical	40	100%	40
TM55	Scald	Water	Special	80	100%	15
TM56	Fling	Dark	Physical	—	100%	10
TM67	Retaliate	Normal	Physical	70	100%	5
TM75	Swords Dance	Normal	Status	—	—	20
TM81	X-Scissor	Bug	Physical	80	100%	15
TM86	Grass Knot	Grass	Special	—	100%	20
TM87	Swagger	Normal	Status	—	85%	15
TM88	Sleep Talk	Normal	Status	—	—	10
TM90	Substitute	Normal	Status	—	—	10
TM94	Secret Power	Normal	Physical	70	100%	20
HM01	Cut	Normal	Physical	50	95%	30
HM03	Surf	Water	Special	90	100%	15
HM05	Waterfall	Water	Physical	80	100%	15
HM06	Rock Smash	Fighting	Physical	40	100%	15
HM07	Dive	Water	Physical	80	100%	10

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Snore	Normal	Special	50	100%	15
Icy Wind	Ice	Special	55	95%	15
Iron Tail	Steel	Physical	100	75%	15
Helping Hand	Normal	Status	—	—	20
Covet	Normal	Physical	60	100%	25
Water Pulse	Water	Special	60	100%	20
Aqua Tail	Water	Physical	90	90%	10
Water Pledge	Water	Special	80	100%	10

X / Y18 level-up · 32 TM/HM · 1 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Tackle	Normal	Physical	40	100%	35
1	Tail Whip	Normal	Status	—	100%	30
1	Water Gun	Water	Special	40	100%	25
1	Water Sport	Water	Status	—	—	15
5	Tail Whip	Normal	Status	—	100%	30
7	Water Gun	Water	Special	40	100%	25
11	Water Sport	Water	Status	—	—	15
13	Focus Energy	Normal	Status	—	—	30
17	Razor Shell	Water	Physical	75	95%	10
20	Fury Cutter	Bug	Physical	40	95%	20
25	Water Pulse	Water	Special	60	100%	20
28	Revenge	Fighting	Physical	60	100%	10
33	Aqua Jet	Water	Physical	40	100%	20
36	Encore	Normal	Status	—	100%	5
41	Aqua Tail	Water	Physical	90	90%	10
44	Retaliate	Normal	Physical	70	100%	5
49	Swords Dance	Normal	Status	—	—	20
52	Hydro Pump	Water	Special	110	80%	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM06	Toxic	Poison	Status	—	90%	10
TM07	Hail	Ice	Status	—	—	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM100	Confide	Normal	Status	—	—	20
TM12	Taunt	Dark	Status	—	100%	20
TM13	Ice Beam	Ice	Special	90	100%	10
TM14	Blizzard	Ice	Special	110	70%	5
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM28	Dig	Ground	Physical	80	100%	10
TM32	Double Team	Normal	Status	—	—	15
TM40	Aerial Ace	Flying	Physical	60	—	20
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM48	Round	Normal	Special	60	100%	15
TM54	False Swipe	Normal	Physical	40	100%	40
TM55	Scald	Water	Special	80	100%	15
TM56	Fling	Dark	Physical	—	100%	10
TM67	Retaliate	Normal	Physical	70	100%	5
TM75	Swords Dance	Normal	Status	—	—	20
TM81	X-Scissor	Bug	Physical	80	100%	15
TM86	Grass Knot	Grass	Special	—	100%	20
TM87	Swagger	Normal	Status	—	85%	15
TM88	Sleep Talk	Normal	Status	—	—	10
TM90	Substitute	Normal	Status	—	—	10
TM94	Rock Smash	Fighting	Physical	40	100%	15
HM01	Cut	Normal	Physical	50	95%	30
HM03	Surf	Water	Special	90	100%	15
HM05	Waterfall	Water	Physical	80	100%	15

Move tutor

	Move	Type	Cat.	Power	Acc.	PP
	Water Pledge	Water	Special	80	100%	10

Black 2 / White 218 level-up · 31 TM/HM · 8 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Tackle	Normal	Physical	40	100%	35
1	Tail Whip	Normal	Status	—	100%	30
1	Water Gun	Water	Special	40	100%	25
1	Water Sport	Water	Status	—	—	15
5	Tail Whip	Normal	Status	—	100%	30
7	Water Gun	Water	Special	40	100%	25
11	Water Sport	Water	Status	—	—	15
13	Focus Energy	Normal	Status	—	—	30
17	Razor Shell	Water	Physical	75	95%	10
20	Fury Cutter	Bug	Physical	40	95%	20
25	Water Pulse	Water	Special	60	100%	20
28	Revenge	Fighting	Physical	60	100%	10
33	Aqua Jet	Water	Physical	40	100%	20
36	Encore	Normal	Status	—	100%	5
41	Aqua Tail	Water	Physical	90	90%	10
44	Retaliate	Normal	Physical	70	100%	5
49	Swords Dance	Normal	Status	—	—	20
52	Hydro Pump	Water	Special	110	80%	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM06	Toxic	Poison	Status	—	90%	10
TM07	Hail	Ice	Status	—	—	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM12	Taunt	Dark	Status	—	100%	20
TM13	Ice Beam	Ice	Special	90	100%	10
TM14	Blizzard	Ice	Special	110	70%	5
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM28	Dig	Ground	Physical	80	100%	10
TM32	Double Team	Normal	Status	—	—	15
TM40	Aerial Ace	Flying	Physical	60	—	20
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM48	Round	Normal	Special	60	100%	15
TM54	False Swipe	Normal	Physical	40	100%	40
TM55	Scald	Water	Special	80	100%	15
TM56	Fling	Dark	Physical	—	100%	10
TM67	Retaliate	Normal	Physical	70	100%	5
TM75	Swords Dance	Normal	Status	—	—	20
TM81	X-Scissor	Bug	Physical	80	100%	15
TM86	Grass Knot	Grass	Special	—	100%	20
TM87	Swagger	Normal	Status	—	85%	15
TM90	Substitute	Normal	Status	—	—	10
TM94	Rock Smash	Fighting	Physical	40	100%	15
HM01	Cut	Normal	Physical	50	95%	30
HM03	Surf	Water	Special	90	100%	15
HM05	Waterfall	Water	Physical	80	100%	15
HM06	Dive	Water	Physical	80	100%	10

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Snore	Normal	Special	50	100%	15
Icy Wind	Ice	Special	55	95%	15
Sleep Talk	Normal	Status	—	—	10
Iron Tail	Steel	Physical	100	75%	15
Helping Hand	Normal	Status	—	—	20
Covet	Normal	Physical	60	100%	25
Aqua Tail	Water	Physical	90	90%	10
Water Pledge	Water	Special	80	100%	10

Black / White18 level-up · 31 TM/HM · 1 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Tackle	Normal	Physical	40	100%	35
1	Tail Whip	Normal	Status	—	100%	30
1	Water Gun	Water	Special	40	100%	25
1	Water Sport	Water	Status	—	—	15
5	Tail Whip	Normal	Status	—	100%	30
7	Water Gun	Water	Special	40	100%	25
11	Water Sport	Water	Status	—	—	15
13	Focus Energy	Normal	Status	—	—	30
17	Razor Shell	Water	Physical	75	95%	10
20	Fury Cutter	Bug	Physical	40	95%	20
25	Water Pulse	Water	Special	60	100%	20
28	Revenge	Fighting	Physical	60	100%	10
33	Aqua Jet	Water	Physical	40	100%	20
36	Encore	Normal	Status	—	100%	5
41	Aqua Tail	Water	Physical	90	90%	10
44	Retaliate	Normal	Physical	70	100%	5
49	Swords Dance	Normal	Status	—	—	20
52	Hydro Pump	Water	Special	110	80%	5

TM & HM

TM	Move	Type	Cat.	Power	Acc.	PP
TM06	Toxic	Poison	Status	—	90%	10
TM07	Hail	Ice	Status	—	—	10
TM10	Hidden Power	Normal	Special	60	100%	15
TM12	Taunt	Dark	Status	—	100%	20
TM13	Ice Beam	Ice	Special	90	100%	10
TM14	Blizzard	Ice	Special	110	70%	5
TM17	Protect	Normal	Status	—	—	10
TM18	Rain Dance	Water	Status	—	—	5
TM21	Frustration	Normal	Physical	—	100%	20
TM27	Return	Normal	Physical	—	100%	20
TM28	Dig	Ground	Physical	80	100%	10
TM32	Double Team	Normal	Status	—	—	15
TM40	Aerial Ace	Flying	Physical	60	—	20
TM42	Facade	Normal	Physical	70	100%	20
TM44	Rest	Psychic	Status	—	—	5
TM45	Attract	Normal	Status	—	100%	15
TM48	Round	Normal	Special	60	100%	15
TM54	False Swipe	Normal	Physical	40	100%	40
TM55	Scald	Water	Special	80	100%	15
TM56	Fling	Dark	Physical	—	100%	10
TM67	Retaliate	Normal	Physical	70	100%	5
TM75	Swords Dance	Normal	Status	—	—	20
TM81	X-Scissor	Bug	Physical	80	100%	15
TM86	Grass Knot	Grass	Special	—	100%	20
TM87	Swagger	Normal	Status	—	85%	15
TM90	Substitute	Normal	Status	—	—	10
TM94	Rock Smash	Fighting	Physical	40	100%	15
HM01	Cut	Normal	Physical	50	95%	30
HM03	Surf	Water	Special	90	100%	15
HM05	Waterfall	Water	Physical	80	100%	15
HM06	Dive	Water	Physical	80	100%	10

Move tutor

	Move	Type	Cat.	Power	Acc.	PP
	Water Pledge	Water	Special	80	100%	10

Where to find it in the official games

Not obtainable in the wild in any of the 16 official games this site covers. In those games it has to be evolved, traded or bred — or it belongs to a game whose data is not here yet.

Where to find it in the ROM hacks

3 guides on this site put it somewhere you can catch it. Areas link to that guide's own route page, with its own rates and levels.

Guide	Where
Blaze Black 2 Redux & Volt White 2 Redux	The Nature PreserveGrass · Lv 17-100 · 20%
Blaze Black 2 & Volt White 2	Nature PreserveGrass · Lv 17-100 · 20%
Pokémon Mirror Gold	Route 24Surf · Lv 60-63 · 4%rare Route 24Surf (swarm) · Lv ? Seafoam Islands 1FGrass (Morning / Day) · Lv 70 · 5%rare and 3 more areas
Unbound	not in the wild in this guide's tables — evolve, trade or battle it
Emerald Rogue	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Soulgold	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Heart & Soul	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon R.O.W.E	not in the wild in this guide's tables — evolve, trade or battle it
Sword and Shield Ultimate Plus	not in the wild in this guide's tables — evolve, trade or battle it
Radical Red	not in the wild in this guide's tables — evolve, trade or battle it
Elite Redux	not in the wild in this guide's tables — evolve, trade or battle it
Inclement Emerald	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Crystal Inheritance	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Crippling Medical Debt Edition	not in the wild in this guide's tables — evolve, trade or battle it
Blinding White Plus	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Hearth	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Imperium	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon: Wishes of Tomorrow	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Exceeded	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Squared	not in the wild in this guide's tables — evolve, trade or battle it
Rising Ruby & Sinking Sapphire	not in the wild in this guide's tables — evolve, trade or battle it
Blaze Black & Volt White	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Omega Ruby Origins	not in the wild in this guide's tables — evolve, trade or battle it
Poke47	not in the wild in this guide's tables — evolve, trade or battle it
HeartGold Generations	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Parallel Emerald	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Black Pearl Emerald	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Overcomplicated	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Rule-ette	not in the wild in this guide's tables — evolve, trade or battle it

Compare official Dewott with the ROM hacks →

In the 29 guides that include it

Changed in 28 of 29 guides: retyped in 7, stats in 3, abilities in 9, evolution in 23.

Every ROM hack on this site that has Dewott, and what it did to it. Guides that changed something are first. Click one for that version's full page — locations, moveset and TMs.

Guide		Type	Total	Abilities
Unbound Evolves into Samurott at level 36 Evolves into Samurott	Changed	Water	413	Torrent, Shell Armor
Pokémon Soulgold Evolves into Samurott — Level 36 (Day) Evolves into Samurott (Hisui) — Level 36 (Night)	Changed	Water	413	Torrent, Shell Armor
Pokémon Heart & Soul Evolves into Samurott at Level 36 while outside the Hisui region Evolves into Samurott-H at Level 36 while in the Hisui region	Changed	Water	413	Torrent, Shell Armor
Pokémon R.O.W.E Evolves into Samurott at Level 36	Changed	Water	413	Torrent, Shell Armor
Sword and Shield Ultimate Plus Evolves into Samurott — Level 36 Evolves into Samurott (Hisui) — use a Link Cable	Changed	Water	413	Torrent, Shell Armor
Blaze Black 2 Redux & Volt White 2 Redux	Changed	Water→WaterFighting	413	Shell Armor, Torrent, Shell Armor
Radical Red Evolves into Samurott (Hisui) at Level 36 (Night) Evolves into Samurott at Level 36 (Day)	Changed	Water	413	Torrent, Shell Armor
Elite Redux Evolves into Samurott at level 36 Evolves into Samurott (Hisui) at level 36	Changed	Water→WaterFighting	420 +7 +7 Attack	Swift Swim, Violent Rush, Fatal Precision
Inclement Emerald Evolves into Samurott at Level 36	Changed	Water	413	Torrent, Shell Armor
Pokémon Crystal Inheritance Evolves into Samurott at level 34 Evolves into Samurott with an Odd Souvenir	Changed	Water	413	Torrent, Shell Armor, Technician + Technician
Pokémon Crippling Medical Debt Edition Evolves into Samurott at Level 36 Evolves into Samurott (Hisui) — use Dusk Stone	Changed		0 -413 -75 HP, -75 Attack, -60 Defense, -83 Sp. Atk, -60 Sp. Def, -60 Speed	—
Blinding White Plus Evolves at Level 40	Changed	Water→WaterFighting	430 +17 -5 HP, +15 Attack, +7 Sp. Atk	Shell Armor, Moxie + Moxie − Torrent
Pokémon Hearth Evolves into Samurott at Level 36 while outside the Hisui region Evolves into Samurott at Level 36 while in the Hisui region	Changed	Water	413	Torrent, Shell Armor
Pokémon Emerald Imperium Evolves into Samurott at level 36 during the day Evolves into Samurott (Hisui) at level 36 at night	Changed	Water	413	Torrent, Shell Armor
Pokémon: Wishes of Tomorrow Evolves into Samurott at Level 36 while outside the Hisui region Evolves into Samurott at Level 36 while in the Hisui region	Changed	Water	413	Torrent, Shell Armor
Pokémon Exceeded Evolves into Samurott at level 36	Changed	Water	413	Swift Swim, Clear Body
Pokémon Emerald Squared Evolves into Samurott at level 36 Evolves into Samurott (Hisui) with a Dusk Stone	Changed	Water→WaterFighting	413	Torrent, Sharpness, Shell Armor + Sharpness
Blaze Black 2 & Volt White 2	Changed	Water→WaterFighting	413	Torrent, Shell Armor, Shell Armor
Rising Ruby & Sinking Sapphire	Changed	Water	413	Torrent, Shell Armor, Shell Armor
Blaze Black & Volt White	Changed	Water→WaterFighting	413	Torrent, Vital Spirit, Shell Armor + Vital Spirit
Pokémon Omega Ruby Origins Evolves into Samurott at Level 36	Changed	Water	413	Torrent, Shell Armor
Poke47 Evolves from Oshawott — Level up: 17 Evolves into Samurott — Level up: 36	Changed	Water	413	Torrent, Hyper Cutter, Shell Armor + Hyper Cutter
HeartGold Generations Evolves into Samurott — at level 36	Changed	Water	413	Torrent, Shell Armor
Pokémon Parallel Emerald Evolves into Samurott at level 36 during the day	Changed	Water	413	Torrent, Shell Armor
Pokémon Black Pearl Emerald Evolves into Samurott at Level 36 Evolves into Samurott (Hisui) with a Linking Cord	Changed	Water	413	Torrent, Shell Armor
Pokémon Overcomplicated	Changed	Water→WaterShouleil	413	Earth Eater, No Moonblast
Pokémon Emerald Rule-ette Evolves into Samurott at Level 36	Changed	Water	413	Torrent, Shell Armor
Pokémon Mirror Gold Evolves into Samurott — at level 36, in the daytime	Changed	Water	413	Torrent − Shell Armor
Emerald Rogue	Unchanged	Water	413	Torrent, Shell Armor

Pokédex entries

What each game says about it, in the games' own words.

Black / X / Omega Ruby	Strict training is how it learns its flowing double-scalchop technique.
White	Scalchop techniques differ from one Dewott to another. It never neglects maintaining its scalchops.
Black 2 / White 2 / Y / Alpha Sapphire	As a result of strict training, each Dewott learns different forms for using the scalchops.

Names in other languages

Japanese	フタチマル
Japanese (Rōmaji)	Futachimaru
German	Zwottronin
French	Mateloutre
Spanish	Dewott
Italian	Dewott
Korean	쌍검자비
Chinese (Simplified)	双刃丸
Chinese (Traditional)	雙刃丸

Official data here is present-day reference data from PokéAPI, not a snapshot of any one game's era — the Fairy type and hidden abilities arrived partway through the series, so a difference against an older game can belong to the series rather than to that ROM hack.