Lupin

Lupin Moon is an Equestrian winged wolf (pterolycus) from outside the reaches of pony territory. Though he doesn't speak much, he can be an asset. Seeking purpose and a cutie mark upon learning of the purity and kindness of ponies, he ended up becoming a slave by a magical collar through Cutie Marker, a hippogriff and descendant of Beak-Buck, who has since made him his assistant pet as the collar will allow him to control him every passing moment, as Lupin has been seeking ways to escape, hopefully through the fillies Marker makes deals with in exchange for cutie marks. But eventually, with help from The Cutie Mark Crusaders, he'll get that chance.