Luther (Tom Hopper) has always been super strong, which is evidenced during flashbacks throughout The Umbrella Academy season one. His powers are amplified after he's injected with gorilla DNA in an attempt to save his life after a mission gone wrong. During season two, we see his strength on display in underground fights put on by Jack Ruby. While Luther is also durable (I mean, he was able to still fight while on fire during apocalypse 2.0), he's not impervious to everything; he did take one brutal beating after learning of Allison's marital status.