Charles Xavier (Earth-TRN620)

Charles Xavier is a mutant who met Gabrielle Haller in a mental institute where both of them were patients. The two fell in love, and after Charles left the hospital, he took Gabrielle with him to his house. The couple eventually married and had a son, who inherited his father's telepathic abilities.

Charles believed himself to be the only one of his kind in the world until he sensed another telepath in Morocco. Despite Gabrielle's pleas, Charles left to meet the man, who turned out to be Amahl Farouk, a very old and powerful mutant. Charles battled Farouk on the Astral Plane and eventually was able to separate the Shadow King's consciousness from his body, diminishing his threat.

Powers
Telepathy: Based on what David deduced, his father was a powerful psychic that battled the Shadow King and won.
 * Astral Manipulation: In David's mental recreation of this battle, his father is seen using telepathy against the Shadow King on the Astral Plane.

Relatives

 * Gabrielle Haller (wife)
 * David Haller (son)