Mister X is a psychic who appears as a member of the JLX in the Amalgam Universe. Mister X agreed to assist the JLX with their search for Atlantis in order to protect the metamutants for the world that despises them. Mister X used his psychic ability to direct the JLX in battle, and had particulary struck up a friendship with the anti-hero, Aqua-Mariner.
In a fight with Will Magnus in Atlantis (as Magnus had framed Aqua-Mariner for an attack on two oil tankers), it was learned that Mister X was actually a Skrull who left Mars to try and find shelter from his own race. The JLX first saw this as deception, but Aqua-Mariner pointed out that those who judge are judges themselves.
- He is one of two Amalgam Comics characters that is an amalgamation of Marvel's Professor X, the other being Doctor Strangefate.
- Appearances of J'onn J'onzz (Amalgam Universe)
- Images featuring J'onn J'onzz (Amalgam Universe)
- Quotations by or about J'onn J'onzz (Amalgam Universe)
- Character Gallery: J'onn J'onzz (Amalgam Universe)