I didn't add the trivia that I removed from the Orbitars page because there's no supporting or even suggestive evidence. Here's what it would have said:
"These orbitars are based on Castor and Pollux, figures of Greek mythology known as "the twins". Castor was said to be a mortal, while Pollux was immortal due to them having two different fathers, one of which was the god Zeus."
- Kirbman 12:09, 13 February 2013 (MST)