Filius is a Filiusdrillo from the planet Fulmis in Ben 10: College Years.It is Fulmini's natural predator
Appearance[]
It has the appearance of an Armadillo made of rocks,it is very intimidating.
It can change its shape and form into an giant rock ball.
Powers and Abilities[]
Resistance against Fulmini's natural electric abilities
The Ability to Turn into an ball made of rocks
The Ability to create earthquakes by just swinging its tail
Weaknesses[]
Water
Appearances[]
Another Nemetrix User
Nemetrix Wielder
Secret
Target:Ben Tennyson
The Big Reveal