Iron Will

Iron Will is one of the secondary characters of Friendship is Magic, his first appearance being Putting Your Hoof Down, a rather controversial episode to say the least. Despite being very aggressive in both canon and fanon, he´s never been portrayed as a villain/bad guy.

Trixie Lulamoon
He´s often paired with her because of their similarities. Both have egos but are still nice, both are performers, both speak on the first person (which´ll make some conversations hilarious)