In his world, Doc Ratcheturn would travel the oceans looking to repair injured robots. From one particular voyage, Ratcheturn never returned; instead his vessel sailed in with the future Captain Metal at its helm. What became of Ratcheturn is unknown, although Captain Metal was grateful for his second chance at life.
- Ratcheturn's name is a play on the words "ratchet turn."
- Ratcheturn bears slight resemblance to Doctor Ivo Kintobor, the good-natured version of Dr. Robotnik from Moebius.
- Ratcheturn is the first, and so far only, Sol Zone robot with benevolent tendencies.