S1·E26 The Man Who Returned

Tom returns to AMAKEN after weeks of absence, but he is completely under Cygnus's control now. He attempts to throw Aaron off a skyscraper, but Mega Man rescues him. After a heated battle with Cygnus Wing, Tom reveals to Geo that Omega-Xis was the one who killed Kelvin. The startling news causes Geo to collapse into a river where he is washed away.