Outsiders volume 3, almost completely unrelated to the previous series, was launched in 2003, featuring new members, some of whom had previously been part of the Titans.
The series was cancelled with issue 50 and relaunched as Batman and the Outsiders (vol. 2), featuring a mix of current and new members.
This new team is put together in the wake of the Titans/Young Justice: Graduation Day crossover that dissolves both groups.
Arsenal accepts the sponsorship offer of the Optitron corporation and uses the money to buy an enormous bomb shelter that used to belong to a multimillionaire and renovated it to create the group headquarters.
He recruits a group of young heroes, the last of them being his friend Nightwing, who joins reluctantly.
Instead of functioning in a reactive capacity like most other super-hero teams, Nightwing decides that this group should act as hunters, tracking down super-villains before they can cause problems.