What nicknames did Caryl Chessman go by?

Caryl Chessman is primarily known by his real name. There's no significant evidence of him using any widely known nicknames.

It's possible he had informal nicknames used by family or close friends, but these are not publicly documented. The focus of his notoriety was the "Red Light Bandit" moniker given to him by the press, emphasizing his string of crimes related to the use of red lights during the robberies.