Beasts are in general in a funny spot right now, other than the "dodge the projectiles" move the wolvers have, they're pretty easy to deal with as a faction.
They're also pretty lacking in enemy variety.

I say we fix both of these problems with a single move - A Giant Crab mini-boss enemy, sort of like the Beast equivalent to the Lumber or maybe even the Trojan. It would be able to move forward, but it would be fastest when strifing to the sides, making it interesting to fight. It could slam it's claw or pinch/grab the knights, inflicting stun. And as a special move it could spew bubbles that would damage and stun the player, and maybe also heal allied beasts, making it the first healing-beast?!?! What-Whaaat.

Why a crab specifically you might ask? Well - because wolvers already took the mammal spot, and chromalisks took the reptile spot, so a crab would be the most interesting choice! Who's with me?! Put your hands together for the Dark Crab, ayyyy