He was kept in Cadmus Labs and was founded by the team. After Jake, Ansem and Red Arrow explain to him everything that happened to him, he escaped his room and went to confront his tormentor, Lex Luthor.
When he encountered Luthor and threatened his life, Luthor gave him a mechanical arm to replace the one he lost. He later joins the team and takes on the name Arsenal.
- In the show he was found by both Red Arrow and Chesire, but in the series he was found by the Warriors of Light and joined them.