Ok, this is my Idea:
In real world, sheeps, are protected with shepherd from wolfs. So, I think, The Fangus is some kind of Dog Creature (not Steef), his mission is Protect the Sheeps, and his enemy (and ships enemy) are some kind of Wolf Predator Creatures. Think about it
Btw. LOOK AT THIS! He have a tail!
Yeah! Fangus is not a Steef!