The season 2 premiere of Krypton just killed off one of Superman's biggest villains. Toward the end of the episode, Brainiac (Blake Ritson), the main villain of season 1, met a grisly end at the hands of Seg (Cameron Cuffe).
Season 1 of Krypton ended with Brainiac's defeat and the rise of a new enemy. Seg's ally in the battle against Brainiac, General Zod (Colin Salmon), turned out to be the real threat to Superman's legacy. Adam Strange (Shaun Sipos) believed that it was his mission to travel back in time and stop Brainiac from erasing Superman from existence, but it was revealed that Brainiac's actions were part of history, and that it was Zod who secretly had a plan to change the timeline. Brainiac was stopped when he and Seg became trapped in the Phantom Zone, allowing Zod to assume control of Krypton.
During the season 2 premiere, titled "Light Years From Home", Seg was left with no choice but to team up with Brainiac to escape the Phantom Zone. After finding a way out, the two found themselves on Brainiac's homeworld, Colu. Brainiac offered a temporary alliance so that they could build a ship and leave the planet. After admitting that he would betray Seg once he was no longer useful, Seg attacked Brainiac with a stick. Despite Brainiac's vast array of powers, he was apparently no match for a stick to the face. When Strange arrived on the scene, he discovered that Brainiac had been bludgeoned to death.
Brainiac's death was surprising to say the least, considering that he held every advantage against Seg, let alone the fact that Brainiac is a key part of Superman lore. This, of course, raises a new question: is Brainiac really gone? If the same fate occurred to any other character, such a gruesome death wouldn't be disputed, but Brainiac is a different story. Like many classic supervillains, Brainiac has returned from beyond the grave on multiple occasions, so it seems possible -- and perhaps even inevitable -- that Krypton's Brainiac would do the same.
Adam Strange (Shaun Sipos) told Seg that when he time-traveled back to present-day Earth, he found out that Brainiac had "bottled" Detroit and added it to his collection of worlds. While this indicates Brainiac survives, it's possible that this future was averted when Seg killed Brainiac. It's worth noting that Brainiac is a character who always has something up his sleeve, so this may not be the last fans will see from the "collector of worlds".