While the Original and Second are Villains Phil Urich uses the identity to become a Hero and there are alternate heroic Green Goblins.
Comics
Phil Urich
Harry's insanity relapses and he becomes the Green Goblin again on numerous occasions, until he dies from the side effects of a modified Goblin serum. His equipment and the identity of the Green Goblin are then briefly used by Philip Benjamin "Phil" Urich (nephew of Ben Urich of the Daily Bugle), who tries to gain a reputation as a superhero, although he is sometimes seen as being as maniacal as his villainous predecessors. When his equipment is damaged during a battle against a Sentinel in the Onslaught crossover, Phil is unable to repair or replace it and the fourth Green Goblin thereafter retires. He later forms the team Excelsior.
Spider-Man Unlimited
A Counter Earth version of Green Goblin appears in the Spider-Man Unlimited animated series voiced by Rino Romano. He is portrayed as a hero, mistaking Spider-Man for an enemy during their first encounter. Instead of a glider, he wields a backpack that sprouts wings. By the end of his first appearance, after saving Naoko and Shayne Yamada-Jones from one of Venom and Carnage's plans with the help of Spider-Man and after the Goblin lets Naoko and Shayne go, he whispers to himself about calling Naoko his love. It is revealed in the next episode, which the Goblin himself does not appear in, that Naoko has a jealous ex-husband who works for the rebellion against the High Evolutionary. Naoko's ex-husband, who is standing in the shadows by the end of the episode, reveals that he is jealous, suspecting that Naoko and Peter Parker, the man who pays the rent while living at Naoko's home, are having an affair. He punches a wall that bricks fall down thus confirming the Goblin is indeed Naoko's ex-husband.
The Goblin's next appears when he finds out that both Spider-Man and Peter Parker are the same person. He also learns that Spider-Man is from the original Earth, and his intentions on Counter-Earth are to rescue John Jameson. Since Jameson, who is working with the rebels against the High Evolutionary, does not agree to come and lets Spider-Man go off on his own, the Goblin decides to help by getting a ship the High Evolutionary has, which was originally Spider-Man's. Spider-Man and the Goblin team up with the Rejects, a group of Beastials that the High Evolutionary got rid of since they proved useless, and they get to Solaris II, the ship Spider-Man once had. Spider-Man has more heart and has Solaris II crash into one of the High Evolutionary's towers, which presumably kills the Goblin in the explosion. However, by the series finale, it is revealed he survived the explosion and joined the Rejects. He leaves them to help Spider-Man and the rebels fight against the High Evolutionary. By the end of the episode, he is one of the characters who run off when thousands of symbiotes spring to Counter-Earth according to Venom and Carnage's plans.
MC2
Normie Osborn
Normie Osborn is the son of Harry Osborn and Liz Allan, and the grandson of Norman Osborn. In the alternate timeline of the MC2 universe he becomes the Green Goblin and battles Spider-Man's daughter, May "Mayday" Parker, before reforming and becoming her ally.
Phil Urich
In the MC2 timeline, Phil Urich marries his girlfriend Meredith and becomes a forensic scientist and friends with Peter Parker. He is aware of both Peter and Spider-Girl's identities. Phil Urich resumes the Goblin identity, first under the name of the Golden Goblin, then as the Green Goblin with the assistance of Normie Osborn (III). After Phil lost a long series of battles, Normie recreates Phil's original mask, which grants him superhuman strength and other abilities, greatly enhancing his effectiveness. He is also a founding member of the New New Warriors.
Spider-Man The Game
Harry Osborn
In a bonus story Harry takes on the role of the Green Goblin and investigates a plan to take over Oscorp and fights some of Spider-Man's Enemies as well as a new unknown Green Goblin that has a deeper voice.