Shvaughn Erin is a Science Police officer in the 30th Century. In this position, Erin became an ally and liaison to the Legion of Super-Heroes. Shvaughn has also been romantically involved with the hero Element Lad. It was later revealed that Shvaughn was born with male genitalia as Sean Erin, and takes the futuristic drug Profem to develop a female body, and eventually returns to identifying as Sean. In Reboot Legion continuity, Shvaughn Erin is not identified as transgender and is not romantically linked to Element Lad.
Shvaughn Erin was created by Paul Levitz and Jim Sherman, first appearing in Superboy and the Legion of Super-Heroes #241 (1978).