Aah! We were better off on exploding planet!
~ Onus

Onus is one of the supporting antagonists in the 2002 Disney animated film Treasure Planet. He is one of the pirates in John Silver's crew. As such, he serves as the lookout, as he is constantly seen in the crow's nest of the Legacy.

He was voiced by Corey Burton, who also played Chernabog, Butch Jones in Disney's Tarzan, V.V. Argost, Quint, and The Brutish Guard.


Onus is a small green slug-resembling alien bearing six eyes.


During the voyage, the ship encounters a supernova. While securing lifelines of all pirates so that they will not get lost, Jim saves Silver from falling just in time. The supernova then devolves into a black hole, where Arrow falls to his death. The burst of shock waves and maximum engine power enable Amelia to pilot the ship to safety. Amelia mourns the loss of Arrow, and suspects Jim of failing to secure the lifelines, while Arrow's line was actually cut by Scroop. He is one of the only few pirates to survive during their mutiny, as he is arrested by Captain Amelia and Dr. Delbert Doppler for his crimes alongside the remaining crew. Despite his arrest, Onus is last seen cheering for Jim along with the other crew for helping them escape from the exploding planet.


We're all clear, Captain!
Captain, the star!
Land ho!
Feast eyes and click heels, if you got them!
With pleasure, Captain.
Throw him off the cliff!
I see nothing! One great, big stinking hunk of nothing!
Aah! We were better off on exploding planet!



  • Onus' voice sounds similar to that of Judge Doom's Toon persona.


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