I’ve posted this before, but I’ve made some changes to it amd developed it a bit more. This is Frightyena, the evolution of Mightyena. Wish I had more tha pencil and paper, can’t do it justice like I want.

Frightyena, the Lycanthrope Pokémon
(Dark/Ghost)

Evolves from Mightyena when leveled up at low friendship or when exposed to a Moon Stone.

Entry 1:
When a Mightyena is driven from its pack for being too weak, it is overcome with intense rage and evolves. It then hunts down its former packmates one by one.

Entry 2:
Frightyena is exclusively solitary, unlike its pre-evolution. When it catches prey, it consumes its soul as well as flesh. Nothing is left behind.