He first appeared in The New Teen Titans #3 (January 1981) and was created by George Pérez and Marv Wolfman.

[1] Simon Jones is a physicist who comes into contact with Trigon while conducting interdimensional research.

[4] In The New 52 reboot, Psimon is resurrected and forms Meta Solutions, a false business dedicated to stripping metahumans of their powers.

Psychic dampeners can be used to prohibit him from using his powers, though Psimon can override their effects via physical contact.

An alternate timeline variant of Psimon makes a minor appearance in Flashpoint as an inmate of military Doom prison.