All right, got 6, ready to start.
A Pidgey named Standard. Cannot use any TM moves. It must also solo all Bug-types in the game.
Pyro theCyndaquil. Once it learns Ember, it must be the only move it can use until Flame Wheel. Once it learns Flame Wheel, you can evolve it into Quilava. Quilava's moveset must include Ember and Flame Wheel at all times. Evolve into Typhlosion once it learns one of Flamethrower and Fire Blast. 4th move can be anything you want, but that move can only be used if Pyro has used all of its other moves against the opponent.
Vexing the Chinchou, must know Thunder Wave and Supersonic/Confuse Ray at all times. Must solo one Gym Leader/Elite Four, but can be evolved before it does.
A Bellsprout, NN TrollSprout. It may only learn moves that have and increased chance of hax/annoyance. This includes stat moves, increased crit chance moves, moves with a chance of status, and just pure annoyance moves.
Booooooo the Tauros. It wants to have the ability Intimidate, but since it can't, it makes itself intimidating by always using Scary Face first thing whenever it comes into battle.
CUT YOU! the Scyther, who may only use attacks that involve the use of its claws. If it gets a critical hit, it must immediately switch out. Solo Clair, for shits and giggles.
A Pidgey named Standard. Cannot use any TM moves. It must also solo all Bug-types in the game.
Pyro theCyndaquil. Once it learns Ember, it must be the only move it can use until Flame Wheel. Once it learns Flame Wheel, you can evolve it into Quilava. Quilava's moveset must include Ember and Flame Wheel at all times. Evolve into Typhlosion once it learns one of Flamethrower and Fire Blast. 4th move can be anything you want, but that move can only be used if Pyro has used all of its other moves against the opponent.
Vexing the Chinchou, must know Thunder Wave and Supersonic/Confuse Ray at all times. Must solo one Gym Leader/Elite Four, but can be evolved before it does.
A Bellsprout, NN TrollSprout. It may only learn moves that have and increased chance of hax/annoyance. This includes stat moves, increased crit chance moves, moves with a chance of status, and just pure annoyance moves.
Booooooo the Tauros. It wants to have the ability Intimidate, but since it can't, it makes itself intimidating by always using Scary Face first thing whenever it comes into battle.
CUT YOU! the Scyther, who may only use attacks that involve the use of its claws. If it gets a critical hit, it must immediately switch out. Solo Clair, for shits and giggles.