The Mask: Animated Series (1995)

S1E11 Martian Mask

A covert government organization suspects that The Mask is an extraterrestrial being, forcing Stanley to navigate a tricky situation. He faces off against his adversary, Lt. Kellaway, who sees The Mask as a dangerous threat, while also dealing with the enigmatic Agent X, who has his own agenda. As tensions rise, Stanley must find a way to clear his name and protect the secret behind The Mask.