Attention interlopers: Your gadget certification diplomas now bear the shameful mark of the frowny face. Feel the sting of disapproval.
— Steward, when heroes are escaping the Minion Training Center, A4O

Steward was a robot which guided minions through the Minion Training Center and its operations. It commented that Carl was one of the names of the dead Rift-Jumper Minions. It was originally for Dr. Croid.