: This is the first appearance of Gwen's brother, Ken.
The team discovers a , a factory producing Xenocytes —parasitic aliens that latch onto humans and mutate them into DNAliens . After rescuing Ken from a parasite with the help of the Omnitrix, they finally find Grandpa Max inside the base. The Sacrifice [S1E6] Max Out
While Ben, Gwen, and Kevin focus on destroying shipments of Xenocytes, Max confronts a Highbreed commander. Facing overwhelming odds and the threat of the Highbreed's global infection plan, Max chooses to detonate an unfocused like a grenade. The resulting explosion vaporizes the factory and seemingly kills both Max and the Highbreed commander, leaving the trio devastated but determined to finish his mission. Key Features & Reveals : This is the first appearance of Gwen's brother, Ken
: Ben learns the Omnitrix has a genetic repair function, allowing him to turn DNAliens back into humans. The Sacrifice While Ben, Gwen, and Kevin focus
The episode begins with asking Ben and Kevin for help finding her missing older brother, Ken . Their investigation leads them to a small town called Santa Mira , which has been secretly overtaken by a Highbreed operation.
"" is the sixth episode of the first season of Ben 10: Alien Force and serves as a major turning point in the series. It features the long-awaited reunion with Grandpa Max and concludes with his shocking self-sacrifice. Episode Summary
: The episode reveals that DNAliens are actually humans mutated by Xenocyte parasites.