Young Justice: The Beginning Vol. 1(They're not Sidekicks)

They might be sidekicks or members of the Justice League, but they can handle themselves out in the field. The team starts with three sidekicks Robin, Aqua-lad, and Kid Flash. They thought that they get to be treated more than sidekicks, but their mentors said they are not ready. Robin, Kid Flash, and Aqua-Lad go on their own mission, Batman has been suspicious about the building Cadmus where they find something very strange under the building Cadmus. So in the Hall of Justice, Robin hacked the main computer and said to Kid Flash and Aqua-Lad that they should go and investigate Cadmus and see what so suspicious about it.