Ok, a few brainstorm ideas. Some with meaning and others I just kind of like the sound of.

Bandit, Leo, Raven, Spencer

This one is kinda neat: Loki, in mythology the Norse God of Mischief

Argo is the name of a ship in greek mythology, just sounds kinda neat.

Triton, name of a satellite of Neptune

Those are a few.. I'll brainstorm a bit more