[Crest Suggestions! (CLOSED)]

Galvantula crest: Sets a layer of sticky webs upon entry and brings all flying pokemon to ground (based on its pokedex entry)

Braviary crest: Sky Drop becomes a one-turn move, gains moxie ability

Gogoat crest: Increases HP gain from recovery moves, contact (or horn) moves are buffed.

Dragalge crest: Increases speed in rain or when underwater, all moves have a chance to poison.

Clawitzer crest: either increases speed in rain or underwater, or just a boost to the base speed, sniper ability is added.

Noivern crest: gains punk rock, normal moves become flying or dragon.

Toxitricity crest: increase in speed when hit by opposing sound moves, normal moves become poison type.

Alright thats it for my second round of suggestions lol

[Crest Suggestions! (CLOSED)]

This part can be applied to both Appletun and Flapple, actually. Whenever it reaches a certain HP (75% or something), the pokemon gets a random berry, ranging from a simple Oran Berry to even a Yache Berry. If the berry is used, another will generate after it goes below the target HP, or wait a turn or two for it to regenerate, allowing for moves like recycle to be of some use.

 

Appletun Crest: Significantly decreases damage from Ice and Fire type moves and removes the ability to get frozen or burned. 

 

Flapple Crest: When this Pokemon gets its stats lowered, attack is raised by two stages accuracy is raised by one.