At the age of 10 (or 13 in the Netflix adaptation), Five disappeared by using his power of time travel to escape into the future. Sir Reginald always warned him that he "could never go back"; it took him 45 years to figure out how to go back in time. He aged normally during his time in the apocalypse, but upon returning to the past he regained the appearance he had the day he travelled forwards. His body is stuck in time and cannot age, as medical examinations prove that there are no signs of cell growth or death. In the Netflix adaptation his body continues to age normally after reverting to its 13-year-old form, and Five bemoans "going through puberty. Twice."
Five claims to have read accounts of the Academy's immediate future and their connection to an apocalypse. While trying to go back in time to warn his adoptive brothers and sisters about the apocalypse, he worked with the Temps Aeternalis. He was taught to perform "micro jumps" in time, allowing him to move faster than the eye can see. In the Netflix adaptation Five simply has the secondary power of teleportation, and does not have to be taught "micro-jumps". He is considered to be "the perfect assassin," as he has had the DNA of the best killers in history infused into him. He has a 100% chance of killing if he decides to kill.
It is revealed in the "Dallas" storyline that Five and Spaceboy are twin brothers.
He has a puppy named Mr. Pennycrumb.
Number Five / The Boy first appeared in The Umbrella Academy: The Apocalypse Suite #2, following a brief appearance on the final page of the previous issue.
