Warning: Contains SPOILERS for The Umbrella Academy season 3.
The Sparrow Academy's future was left uncertain by the end of TheUmbrella Academy season 3, but whether they will return for season 4 is debatable. Some of the Sparrow Academy's fates were sealed with the Kugelblitz or earlier in season 3. There are only two whose return would make the most sense in The Umbrella Academy season 4.
The Umbrella Academy season 3 introduced the Sparrows as a version of the original seven in a parallel universe. Indeed, the Sparrows were also comprised of seven superpowered individuals with an anthropomorphic monkey to guide them through their childhoods. Their appearance has led many to wonder whether the Sparrows will return in The Umbrella Academy season 4, so it's worth remembering that characters who die in the show have a strong chance of reappearing in another timeline. Reginald and Pogo are both good examples of this.
Related: Why They're Called The Sparrow Academy Instead Of Umbrella Academy
The ending of season 3 confirmed that Ben will definitely reappear in The Umbrella Academy season 4 as he appeared in the courtyard in the final scene, but the others are unconfirmed. Five of the original seven of the Sparrow Academy perished in season 3, mostly due to the Kugelblitz. While Marcus was taken by the Kugelblitz, Jayme and Alphonso fell victim to Lester Pocket's burst of sound energy. Later on, Christopher exploded, triggering the Kugelblitz once again, which killed Fei in the process. Hence, the only Sparrows left alive by the end of season 3 were Sloane and Ben.
The reason Ben was the only Sparrow in The Umbrella Academy season 3's ending may be for the same reason Ben featured in the Sparrow Academy at all. The
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