Weed cat

Castform

Hydreigon

Arceus

Castform - hehe boo-

Hydregion - you only have 1 brain despite having 3 heads

Arceus - Look at this fancy gate goat

Greninja

Chespin

Cinderace or inteleon

This should be an easy one- vanilluxe

Ah yes Arceus the fence llama