S1·E25 Biggest Fan or Biggest Foe?

Geo encounters Ophiuchus Queen, the fusion of Luna and Ophiuchus, who knocks him unconscious. This leaves Sonia to take care of the enemy, transforming into Lyra Note to battle. Mega Man later intervenes, and together, they knock Luna out of the fusion. Ophiuchus escapes. Afterwards, Geo recalls his encounters with the FM-ians from the previous 12 episodes, and he questions the connections between his father's disappearance and Omega-Xis's appearance on Earth.