The Visitor (S03E13)

Title: The Unexpected Visitor Plot: During a snowmobiling adventure, two friends inadvertently free an extraterrestrial named Xylene from a mysterious pod. Meanwhile, Ben, transformed into Wildmutt, snatches Gwen's kite, prompting her to cast a spell that draws dogs to him. Grandpa Max feels melancholic in St. Louis, reminiscing about his late wife. Suddenly, Xylene launches an attack, but Grandpa Max intervenes and recognizes her. She explains she’s on a quest to recover the Omnitrix, which was lost during a Vilgax ambush. As they reminisce, a menacing robot appears and captures Grandpa Max, forcing Ben to reluctantly team up with Xylene to rescue him.