Dexter Reilly

Dexter Riley is the main protagonist of the "Medfield film trilogy", which includes The Computer Wore Tennis Shoes (1969), Now You See Him, Now You Don't (1972), and The Strongest Man in the World (1975).

He was portrayed by Kurt Russel.

The Computer Wore Tennis Shoes
Dexter is a student at Medfield College who goes a series of acquring various superpowers through bizarre, unlikely means. One night, he gets struck by lightning while installing a replacement computer part and becomes a human-computer able to absorb vast amounts of information and make incredibly fast calculations. Later, he achieves transparent invisibility and super strength through chemical accidents.

Trivia

 * Dexter is one of the first live-action Disney character to appear in more than one live-action Disney film even before the 1980's.
 * He is mentioned in the queue-line of Journey into Imagination, which his name is called out by a secretary informing him he's left his tennis shoes in the computer lab.