Grampa — Dog Man Character Profile

About Grampa

Petey's abusive biological father who is brought to the lair by Li'l Petey. He continues to berate Petey, proving he has not changed, and later clears out the lair, leaving only Li'l Petey's books behind.

Character Facts

Played by

Stephen Root

Appears in

Dog Man (2025)

Role

Supporting

More characters from Dog Man

• Dog Man / Officer Knight / Harold's House (Peter Hastings)
• Petey the Cat (Pete Davidson)
• Chief (Lil Rel Howery)
• Sarah Hatoff (Isla Fisher)
• Scientist (voice) (Laraine Newman)
• Li'l Petey (Lucas Hopkins Calderon)
• Doctor (voice) (Rahnuma Panthaky)
• Big Jim (voice) (Brian Hopkins)
• Realtor (voice) (Melissa Villaseñor)
• Rocco (voice) (Max Koch)
• Surfer (voice) (Percy Rustomji)
• Mayor (voice) (Cheri Oteri)