Kento and his son were still living on Kashyyyk when the Sith Lord Darth Vader launched a massive invasion on Kashyyyk. With the secrecy of his hidden location compromised, Kento Marek resumed his former role as a Jedi Knight and aided the Wookiees in defending their homeworld. When the battle was all but lost, Kento Marek made his last stand against Vader in front of his hut. After a brief duel, Kento was easily defeated by the more powerful Sith Lord. Upon his death, Vader took it upon himself to raise the Jedi's young son as his secret apprentice.