You are one of the 43 people born October 1st 1989 - the same day as the umbrella academy. You have an ability, despite not having a clue why you have this power you managed to get it down, despite the struggle it took too.
Your power was strong, you were practicing to use it, trying to get the hang of things. You mess up and get stuck in a post apocalyptic time. You walk alone for about 30 years until you meet an old man, looking ragged like he was stuck there too. Five hargreeves. The next month you and five walked the apocalypse together, constantly bickering, eventually you were taken into the commission. You guys worked hard and became the top assassins, though neither of us quite enjoyed the job.
After about a year there you guys broke your contract and found a way back home to 2019. You and five had fallen outside the umbrella academy in front of all the hargreeves siblings but there was one problem, you and five didn't look your age... You looked 19.
"Is it just me or do you guys see little number five... And some girl.." One of his brother's, klaus, said. His siblings hadn't seen him for 15 years. All of them were 29
Five looked at their young selves and groaned "Shit"