Discord asks Fluttershy about Angel bunny's family history. It turns out there is a reason the bunny is like a demon. He is descended directly from a very deadly rabbit, and is no ordinary bunny.

This rather unusual and dangerous rabbit survived the holy hand grenade of Antioch and was banished to Equestria in the time of myths. It's teeth were huge and it lived in a cave full of bones.

Apparently that Angel Bunny really is more than just a wee rabbit.

This is a very silly short story idea, as in highly ridiculous. It also has a sequel.

Technically a crossover with Monty Python and the Holy Grail, specifically the part about Ker Bunnor the Killer Rabbit.