Joe the Fish (voiced by the late Alan Rickman) is the main antagonist of Jaden's Adventures of Help! I'm a Fish He drank fish antidote, giving him intelligence and the ability to speak. But he craved more. He tried to get Fly, Jaden and Ariel to tell him. His demise was when he drank to much antidote turning him into a human and drowned in the process.
- Joe is in charge of the ocean sections of Set's league of villains.
- Joe will be back for revenge in Jaden goes Finding Nemo.
- Joe will be one of many villains to appear in Jaden's Adventures of Fantasmic!
- Joe will become one of Jeffrey's major enemies in Jeffrey & Friends say Help! I'm a Fish!.
- Joe will return for revenge on The Justice Guardians and the Shell Louge Squad in Jeffrey, Spongebob, Spyro & Friends join Underfist.
- Joe will return for revenge in Jeffrey, Jaden & Friends' Storm Adventures of Pokemon Ranger and the Temple of the Sea.