Calavera,or the One-Who-Scared-All,is a mutant Rabbid mixed with a coffin and some spiky vines.

he is covered in tattoos and loves to wear his traditional clothes: a manky and broken top hat with purple feathers,and a red bowtie.

Calavera can attack by controlling his four spiky vines,which act like his arms and legs,he also uses his coffin door as a shield.