Voltron: Defender of the Universe

Haggar locates and takes control of the Omega Comet, a legendary black-hole-like structure which crushes and destroys anything in its path, and sends it for Arus. Though Voltron redirected it once after a decade of trying, the Voltron Force are forced to race against time to move it themselves after they get Romelle's warning. Seeing Allura's cousin's loyalty to them, Lotor mentions that a certain control-function will help them in front of Romelle, and she relays the information to them. But it was a trap Lotor had her lure them into, and they crash-land and are stranded upon the comet without power. The Galaxy Alliance can send no reinforcements thanks to Zarkon's fighting. But Bandor goes against orders to stop guarding the power-supply he was posted in front of to repay his comrades. The Voltron Force cannot escape, and conclude that Bandor must use his arsenal to strike the comet away from Arus - though they know it means self-sacrifice.

The one who approaches Romelle after her being forced into the Pit of Skulls is a young, wild-eyed man who warns her of the approaching guards that come down to ensure she is finished, and helps her into a passageway through a cave but then vehemently bids her leave him. She is able to identify him as Sven, but the former pilot of the Blue Lion has lost his faith in himself, feeling remorse over his defeat by Haggar and his inability to aid Planet Ebb when it was attacked when he was hospitalized, and is nearly mad with grief after witnessing so many brutalities every day. Romelle tries to convince Sven to help her get off Doom and contact the Voltron Force so she can return to and defend Pollux as only she knows how, with the help of a group of slaves who are desperate for their own freedom and could be what they need to help them escape...

When Zarkon denies Lotor the power of his whole army to attack Arus, Lotor tries to take his power from him by besting him in combat, but fails and acts humble enough to have his life spared. Haggar convinces them to put aside their personal disagreement for the moment since she reveals she's built a Robeast with a frame slightly resembling Voltron's and directed by a robot pilot to conquer Arus. Arus' defense-system is destroyed just after it shows what approaches, and the Voltron Force discover their opponent will not easily be beaten. Voltron is forced to fight while growing weaker and weaker as he is damaged by the strong machine, and the Blue Lion that is the main power-source as his Right Leg faces possible destruction.