Don Greyhound is an Italian greyhound mobster whose violent grudge with Poncho and Boomer makes him the dual-main antagonist (along with Frank Underwood, because of Interdimensional Black Ops' need to bring Dogbert and Rat in) of Poncho's Adventures.
He pursues them, and by extension, The Rogues, throughout the multiverse. He joins forces with Director Krennic and the Galactic Empire, and Bowser's Koopa Troop, eventually taking the reins of the coalition to destroy The Rogues.
- He owns and pilots a starship capable of both lightspeed and inter-dimensional travel. How he acquired this ship is unclear.