Netflix previously announced that the existing The Umbrella Academy siblings will be back, including Elliot Page as Vanya, for Season 3. We can definitely expect Robert Sheehan to get funky as Klaus again, and the rest of the Hargreeves sibling actors (Tom Hopper, David Castañeda, Emmy Raver-Lampman, Robert Sheehan, Aidan Gallagher, Justin H. Min) will be back, too. Yet as the Season 2 finale revealed, Sir Reginald Hargreeves had kept himself busy (and up to no good) prepping another stash of superpowered progeny, who will be known collectively as the Sparrow Academy. This changes the whole game, and warring academies will likely be on the agenda.