Lotor, the King Voltron: Defender of the Universe : Season 1 Episode 51

This one picks up where the last one left off, with Voltron flying toward Doom and Lotor preparing to launch his father who is a most unwilling robeast pilot. Lotor is pumping up the morale of his troops, while Romelle and her forces are ready to lend Voltron a hand. She and Sven are prepared to take out Haggar's laboratory, while Lotor has sent out his minions to try to stop her