Prince Adam is the alter-ego of He-Man. They are a fictional characters in the Masters of the Universe franchise. He-Man and his friends defend Eternia and the secrets of Castle Grayskull from the evil forces of Skeletor.
Adam appears in "Brian the Bachelor" as a contestant on The Bachelorette taking the donkey that was intended to be for Brian. He used his sword to simultaneously transform himself and the donkey into He-Man and Battle Cat, respectively.
In "Stew-Roids", when Stewie takes steroids and becomes very muscular, he lifts a barbell with one hand and shouts: "I have the power!", He-Man's iconic catchphrase.
He-Man appears in the Robot Chicken universe in "Road to the Multiverse", and also as one of Stewie's toys in "April in Quahog".
Brian tries to join Stewie playing with his toys of the Transformers and He-Man with Scotty Jennings in "Livin' on a Prayer", unaware of who the characters are. Stewie becomes upset when he wants to involve the two groups of toys together.
Peter tries to justify opening Quagmire's mail to see if it contains He-Man's mail instead in "Herpe, the Love Sore".
Peter gets a He-Man figure for his birthday from Meg in the parody of Succession in "HBO-No'.
He is voiced by John Erwin, who reprised the role.