ROM Hack Guides
Gastrodon

Gastrodon in Sacred Gold & Storm Silver

#423 · Water / Ground · see locations below

WaterGround

Abilities

Sticky Hold, Storm Drain

Base stats

HP111
Attack83
Defense68
Sp. Attack92
Sp. Defense82
Speed39
Total475

Where to find Gastrodon

AreaMethodLevel
Dark Cave (Violet Side)Surf
Union Cave (1F)Surf5% rare
Union Cave (B1F)Surf5% rare
Union Cave (B2F)Surf5% rare
Slowpoke Well (B1F)Cave28-33
Dark Cave (Blackthorn Side)Surf
Route 21Grass54-59

Level-up moves

LvMoveTypeCatPowAccPP
1Harden
Raises the user’s Defense by one stage.
NormalStat30
1Mud Sport
Halves all Electric-type damage.
GroundStat15
1Mud-Slap
Has a chance to lower the target’s accuracy by one stage.
GroundSpec2010010
1Water Pulse
Has a chance to confuse the target.
WaterSpec6010020
2Mud Sport
Halves all Electric-type damage.
GroundStat15
4Harden
Raises the user’s Defense by one stage.
NormalStat30
7Water Pulse
Has a chance to confuse the target.
WaterSpec6010020
11Mud Bomb
Has a chance to lower the target’s accuracy by one stage.
GroundSpec658510
16Hidden Power
Power and type depend upon user’s IVs. Power can range from 30 to 70.
NormalSpec110015
22Rain Dance
Changes the weather to rain for five turns.
WaterStat5
29Body Slam
Has a chance to paralyze the target.
NormalPhys8510015
41Muddy Water
Has a chance to lower the target’s accuracy by one stage.
WaterSpec958510
54Recover
Heals the user by half its max HP.
NormalStat5
68Earth Power**
Has a chance to lower the target’s Special Defense by one stage.
GroundSpec9010010

* legal move moved to level-up · ** new to this hack (not in the Legit build)

TMs & HMs (37)

#Move · where to get itTypePow
TM03Water Pulse
Also received from a Fisherman in Route 32's Pokémon Center.
Water60
TM06Toxic
Automatically obtained after defeating Petrel in the Cliff Cave.
Poison
TM07Hail
Also buyable from the shop in Mahogany Town.
Ice
TM10Hidden Power
Received as a reward in the Ruins of Alph for capturing 7 different types of Unown.
Normal1
TM13Ice Beam
Also found in Ice Path. Reduced to 4,000 Coins in Goldenrod Game Corner.
Ice95
TM14Blizzard
Unchanged from HeartGold and SoulSilver
Ice120
TM15Hyper Beam
Unchanged from HeartGold and SoulSilver
Normal150
TM17Protect
Unchanged from HeartGold and SoulSilver
Normal
TM18Rain Dance
Also buyable from the shop in Mahogany Town.
Water
TM21Frustration
Unchanged from HeartGold and SoulSilver
Normal
TM26Earthquake
Purchasable in Celadon City.
Ground100
TM27Return
Unchanged from HeartGold and SoulSilver
Normal
TM28Dig
Removed from Celadon City, purchasable in Goldenrod City.
Ground80
TM32Double Team
Unchanged from HeartGold and SoulSilver
Normal
TM36Sludge Bomb
Unchanged from HeartGold and SoulSilver
Poison90
TM37Sandstorm
Also buyable from shop in Mahogany Town.
Rock
TM39Rock Tomb
Unchanged from HeartGold and SoulSilver
Rock50
TM42Facade
Unchanged from HeartGold and SoulSilver
Normal70
TM43Secret Power
Unchanged from HeartGold and SoulSilver
Normal70
TM44Rest
Unchanged from HeartGold and SoulSilver
Psychic
TM45Attract
Also purchasable in Vermilion City.
Normal
TM55Brine
Removed from Celadon Mart; buyable in Goldenrod Mart.
Water65
TM58Endure
Unchanged from HeartGold and SoulSilver
Normal
TM68Giga Impact
Unchanged from HeartGold and SoulSilver
Normal150
TM70Flash
Removed from Goldenrod; given as a free gift in Route 10 Pokémon Center.
Normal
TM71Stone Edge
Obtainable from a man in Indigo Plateau; purchasable in Celadon City.
Rock100
TM78Captivate
Unchanged from HeartGold and SoulSilver
Normal
TM80Rock Slide
Also in Ruins of Alph, behind the 'LIGHT' door.
Rock75
TM82Sleep Talk
Unchanged from HeartGold and SoulSilver
Normal
TM83Natural Gift
Removed from Goldenrod Mart.
Normal
TM87Swagger
Unchanged from HeartGold and SoulSilver
Normal
TM90Substitute
Unchanged from HeartGold and SoulSilver
Normal
HM03Surf
Ecruteak Dance Theatre, after the Kimono Girls — needs the Fog Badge to use
Water95
HM04Strength
Where HeartGold and SoulSilver left it — needs the Plain Badge to use
Rock60
HM05Whirlpool
From Lance in the Team Rocket hideout — needs the Glacier Badge to use
Water35
HM06Rock Smash
Where HeartGold and SoulSilver left it — needs the Zephyr Badge to use
Fighting60
HM07Waterfall
Where HeartGold and SoulSilver left it — needs the Rising Badge to use
Water80

Open in the interactive guide