Yanmega in Polished Crystal

Bug / Dragon — where to catch it, what it learns, and how it differs from the official games.

Compared with the official games

Type Bug / Flying → Bug / Dragon
Abilities gains Levitate and loses Frisk

Compared against present-day official data. The Fairy type and hidden abilities arrived after Pokémon Crystal, so a difference here can belong to the series rather than to this hack.

Other changes in this hack

Learns DragonBreath the moment it evolves
Wild held items: Wide Lens
Catch rate 30
Base experience 198
EV yield: 2 Atk
Egg groups: Bug
Growth rate: Medium Fast
Move tutors: Double-Edge, Dream Eater, Endure, Headbutt, Sleep Talk, Swagger

In the Faithful version

Everything above is the Polished version. In Faithful, its types are Bug / Flying; abilities are Speed Boost, Tinted Lens, Frisk.

Yanmega in other guides

The same Pokémon, as 15 other hacks change it:

Unbound Emerald Rogue Infinite Fusion Radical Red Lazarus Gaia Blaze Black 2 Redux & Volt White 2 Redux Inclement Emerald Elite Redux Emerald Imperium Blaze Black 2 & Volt White 2 Sacred Gold & Storm Silver Renegade Platinum Rising Ruby & Sinking Sapphire Blaze Black & Volt White

Where to find Yanmega

Area	Method	Level
Murky Swamp	Grass (morning/day)	Base−2 to Base+3	5% rare

Level-up moves

Lv	Move	Type	Cat	Pow	Acc	PP
1	Bug Bite Bites the foe and eats a held Berry.	Bug	Phys	60	100	20
1	DragonBreath A strong breath attack.	Dragon	Spec	60	100	20
1	Foresight Negates foe's eva- sion and immunity.	Normal	Stat	—	—	40
1	Night Slash	Dark	Phys	70	100	15
1	Tackle A full-body charge attack.	Normal	Phys	40	100	35
6	Quick Attack Lets the user get in the first hit.	Normal	Phys	40	100	30
11	Double Team Raises the user's evasiveness.	Normal	Stat	—	—	15
14	Sonic Boom Always inflicts 20HP damage.	Normal	Spec	20	90	20
17	Protect Foils attack that turn. It may fail.	Normal	Stat	—	—	10
22	Dragon Rage Always inflicts 40HP damage.	Dragon	Spec	40	100	10
27	Supersonic	Normal	Stat	—	65	20
30	Pursuit Heavily strikes switching #mon.	Dark	Phys	40	100	20
35	AncientPower An attack that may raise all stats.	Rock	Spec	60	100	5
38	Slash	Normal	Phys	70	100	20
43	Wing Attack Strikes the foe with wings.	Flying	Phys	60	100	35
46	Screech Sharply lowers the foe's Defense.	Normal	Stat	—	85	40
49	U-turn	Bug	Phys	70	100	20
54	Air Slash	Flying	Spec	75	95	15
57	Bug Buzz	Bug	Spec	90	100	10
62	Fly 1st turn: Fly 2nd turn: Attack	Flying	Phys	90	100	15

* a legal move, just moved to level-up · ** new to this hack

TMs & HMs (27)

#	Move · where to get it	Type	Pow
TM02	Dragon Claw Route 27	Dragon	80
TM03	Curse Celadon Mansion	Ghost	—
TM06	Toxic Celadon Game Corner	Poison	—
TM10	Hidden Power Lake of Rage	Unknown	70
TM11	Sunny Day Celadon Dept. Store	Fire	—
TM15	Hyper Beam Goldenrod Dept. Store	Normal	150
TM17	Protect Goldenrod Dept. Store	Normal	—
TM19	Giga Drain Erika	Grass	75
TM22	Solar Beam Goldenrod Dept. Store	Grass	120
TM27	Return Goldenrod Dept. Store	Normal	1
TM30	Shadow Ball Morty	Ghost	80
TM32	Double Team Celadon Game Corner	Normal	—
TM39	Swift Union Cave	Normal	60
TM40	Aerial Ace Mount Mortar	Flying	60
TM41	Substitute Lake of Rage	Normal	—
TM42	Facade Dim Cave	Normal	70
TM44	Rest Dim Cave	Psychic	—
TM45	Attract Whitney	Normal	—
TM46	Thief Team Rocket Base	Dark	60
TM47	Steel Wing Route 28	Steel	70
TM50	Leech Life Yellow Forest	Bug	80
TM51	Roost Falkner	Flying	—
TM59	Dragon Pulse Clair	Dragon	85
TM68	Giga Impact Celadon Game Corner	Normal	150
TM69	U-turn Bugsy	Bug	70
TM70	Flash Sprout Tower	Normal	—
HM02	Fly Yellow Forest	Flying	90