Spinyfriend is a half-locust, half-hedgehog hybrid that the party meets in the caves of The Switchblades. He is a happy and peaceful abomination and has some affiliation with Brian Fuck. It is unclear which half of him is meant to be which animal.
Bellow and Cordelia use their ability to speak with animals to communicate with the hybrid creature. He has no name of his own so he lets the party name him. Bellow proposes Spinyfriend while Cordelia offers Cordelia. Since Stirfry mimics Cordelia’s animal speech, the mutant decides that enough creatures are named Cordelia already and chooses Spinyfriend.
He advises the party on the relatively few dangers of the cave before deciding to travel with them. When they reach a part of the cave full of fused creatures and naturally growing body parts, Spinyfriend takes them to Brian Fuck to explain things to them.