- Real name: Gnill Opral
- Alias: Kid Psycho
- Identity: Public
- Alignment: Good
- Gender: Male
- Occupation: Adventurer; Legion Reservist
- Family: None
- Affiliation: Legion of Super-Heroes (Pre-Zero Hour)
- First appearance: Superboy #125 (Dec 1965)
- Appearance of death: Crisis on Infinite Earths #3 (Jun 1985)
- Universe: Pre-Zero Hour
- Alternate versions: None
Gnill Opral, alias Kid Psycho, hailed from the planet Hajor. Before his birth, his parents were astronauts on his home planet, and were charged with killing a space monster that threatened their space program. In the process the two were exposed to radiation that caused their son Gnill to be born with an abnormally large head, and to be gifted with mental powers. He used his powers to aid his planet. However, when he could not prevent his planet's destruction by an wandering planet, his parents managed to send him away in a ship before the end.
The sole survivor of his race, Gnill attempted to join the Legion of Super-Heroes as Kid Psycho. However, the Legion's evaluation of Kid Psycho found that whenever he used his powers it would take a year off his life. As a result the Legion declined his membership without telling him why. Gnill travelled to the 20th Century to seek the aid of Superboy to learn the reason why his membership was rejected. This led to the Legion reconsidering their decision and accepting Kid Psycho as a reserve member to be used as a secret weapon when needed.
After helping the Legion on a number of missions, Kid Psycho met his demise when trying to protect people from the antimatter wave caused by the Anti-Monitor during the Crisis on Infinite Earths, and he was erased from existence.