|Voiced by:||Donald Glover|
|Appears in:||"Rap It Up"|
Alpha-Dog is a character featured in "Rap It Up". Alpha-Dog is the leader of a rap gang called CrewCrew, and the main antagonist in "Rap It Up". He is the one who initially makes fun of Pops. Alpha-Dog appears to be the best rapper in CrewCrew. Eventually at the end of the episode he was killed in an explosion due to Pops' poetry. He is voiced by guest voice actor, Donald Glover.
He wears a teal and white cap, a red plaid shirt, black jeans and white shoes. He also has a red lollipop in his mouth.
- Alpha-Dog is the third antagonist who is a musician, the first two being Future Mordecai and Future Rigby, and the second being Summertime Song (character).
- He oddly resembles Vyron Dalyan Turner, widely known as Left Brain of the rap group OFWGKTA, the same rap group Tyler, The Creator founded. Tyler also voiced the character Blitz Comet in the episode "Rap It Up".
- Alpha-Dog's red lollipop is more than likely supposed to resemble a cigarette.
- He was not revived by Garrett Bobby Ferguson Jr. in Exit 9B.
- He is voiced by Donald Glover who also guests in Adventure Time as Marshal Lee, oddly enough Alpha-Dog wears a red squared-pattern shirt similar to Marshal Lee's, though this is only a coincidence.