Peppy Hare is a retired member of the legendary Star Fox team. Having had years of service in the Cornerian Military with previous comrade and best friend James McCloud, they both started the Star Fox mercenary team, intent on serving justice and freedom. An experienced pilot, Peppy had learned many tricks in his years of flying and is also very knowledgeable about Andross's forces, since he once had to escape captivity at their hands after a scouting mission ended badly due to the betrayal of their unfaithful teammate Pigma Dengar. Peppy barely managed to escape on his own to return to Corneria to inform James's only son Fox of his father's fate. Peppy then joined the newest Star Fox team, consisting of himself and Fox, ace pilot Falco Lombardi and mechanical engineering expert Slippy Toad. Even though Peppy was much older than all the other team members, he declined the leadership role and insisted that it should be the younger McCloud to take over the team, probably as per James' last wishes before he was presumed to have been slain by Andross. Peppy then served as Fox's mentor and fatherly figure to the whole Star Fox team, frequently giving valuable instructions and advice throughout the course of their following missions.

Peppy typically appears in all Star Fox games to date, as well as the comics and the "Star Fox Zero " promotional anime, as a supporting protagonist. He also appears as a background character in all Super Smash Bros. games, starting with "Melee".