Robin was the Dark Knight's first sidekick and trained under him for years. He eventually left Gotham and formed his own team, the Teen Titans, in nearby Jump City. A natural leader and hero but harboring a bit of a short temper, Robin shares his former mentor's tendency towards obsession for crime-fighting. He tends to be serious, but is able to joke around with his friends. While he is something of a loner and often keeps to himself, he cares deeply for his teammates and is a devoted friend.