Season 1 focuses on the arrival of Osmosian villain Aggregor, who kidnaps five aliens from the Andromeda Galaxy. Ben must stop Aggregor from obtaining the Map of Infinity. – Ben's secret is revealed. Duped – Ben splits into three versions of himself. Hit 'Em Where They Live – Villains target Ben’s family. Video Games – Ben is scanned for a video game combatant.
– The Ultimate aliens gain sentience.
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Ben 10 Wiki Verification Project Last verified: March 2025 Status: ✅ Fully cross-referenced with primary sources Season 1 focuses on the arrival of Osmosian