Sebastain the Crab (voiced by Samuel E. Wright) is King Triton's majordomo and the royal court composer to the Kingdom of Atlantica. He first appeared in Jaden meets the Little Mermaid, where he helped Ariel get Prince Eric to fall in love with her. He acts worried at times, but is still a good friend to Ariel, Simba, and Jaden.
- Jaden will see Sebastian again in Jaden's Adventures of Help! I'm A Fish.
- Sebastian will join The Jungle Adventure Crew after Simba, Timon, and Pumbaa's Adventures of The Little Mermaid.
- Sebastian will meet Jeffrey and his friends in Jeffrey & Friends meet The Little Mermaid.
- Sebastian will meet Juniper Lee in episode 7 of Juniper Lee's Adventures Series titled Mermaid Summer.
- Sebastian will guest star in Jeffrey, Jaden & Friends' Storm Adventures of Pokemon Ranger and the Temple of the Sea.
- Fun Fact: In the early stages of the Jeffrey & Friends' Adventures series, Sebastian was going to join Jeffrey's team. But the idea was dropped after he joined the Jungle Adventures Crew.
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