Main plot points of season 3
1) There is some machine that allows the creation of timelines (universe is a simulation vibes)
2) Timeline fuckery resulted in a timeline where Umbrella Academy never existed. Only people who live are Ben and some gravity controlling woman that #1 married, but she was MIA in the new new timeline/universe
3)Ben is alive now (see above)
4) Allison is a selfish murdering rapist but considering we see her in the car with everyone else in the trailer, who the fuck knows?
5) Vanya is now Viktor