Gym Leader's Ace
Roxanne in Ruby & Sapphire was meant to pay homage to Brock, even sharing his Geodude. But she had this instead of an Onyx.
What is Nosepass
A POKéMON that has been overhunted almost to extinction. It can ferry people across the water.
Lapras
(5)
Piloswine
Star-shaped rays that never miss are fired at all foes in battle.
Swift
This pokemon requires the 3DS to be upside down!
Inkay > Malimar
Despite what an iconic fight with Charizard in the anime may say, This Pokemon is actually Blaine's ace in the mainline games.
Arcanine
The fluid that oozes from its mouth isn’t drool. It is a nectar that is used to attract prey.
Gloom
(3)
Blastoise
The user's body is forced to grow, raising the Sp. Atk stat.
Growth
Eevee has many unique types of evolution methods. But this is how it evolves into the newest Eeveelution, Sylveon
Happiness while knowing a fairy type move
Some people are surprised by Jasmine's ace. Not what you'd expect if you judged books by their cover.
Steelix
Lives about one yard underground where it feeds on plant roots. It sometimes appears above ground.
Diglett
(6)
Shinx
The user shoots a sinister, bluish-white flame at the target to inflict a burn.
Will o Wisp
Alola made a lot of changes to the game, including being the first where none of the starters evolve at level 36! In fact, all 3 evolve at this level.
34
A goal of Emerald was to make the gyms harder, and the 8th gym was no exception. Juans Ace was a scary upgrade over Wallace's Milotic.
Kingdra
Lives in the shadows of tall trees where it eats insects. It is attracted by light at night.
Venonat
(10)
Mudsdale
Opposing Pokémon are dragged into a world of total darkness that makes them sleep.
Dark Void
Trade evolutions are the worst. Now imagine if the the sent & received pokemon had to be specific. Thats the case with these two who have to trade for each other.
Karrablast and Shelmet.
Aaron, the first member of Diamond/Pearl Elite 4, has a rather misleading Ace. It may look like his signature type, but actually doesn't have that type at all.
Drapion
They say that if it emits an aura from its whole body, the weather will begin to change instantly.
Dragonair
2
Galvantula
The target is hit by a watery blast. The user can't move on the next turn.
Hydro Cannon
Galarian Farfetch'd was born to fight. So much so, it can only evolve by doing this weirdly specific, yet violent thing in combat.
3 critical hits in battle.