Captain Nemo

"YOU CALL THAT MURDER? Well, I see murder, too, not written on those drowned faces out there, but on the faces of dead thousands! They are the assassins, the dealers in death; I am the avenger!"

- Captain Nemo to Professor Arronex after sinking a ship in the Disney adaption

Captain Nemo is one of the main characters in the two Jules Verne novels, Twenty Thousands Leagues Under the Sea and The Mysterious Island. His is one of the famous anti-heroes in literature, making him villainous.

Disney Adaption
He was played by the late James Mason. Unlike the novel having Nemo survive as seen in The Mysterious Island, Nemo was shot and the Nautilus sank to the bottom of the sea.

Alan Moore's Portrayal
n their graphic novel The League of Extraordinary Gentlemen, Alan Moore and Kevin O'Neill made Nemo Indian as he was in The Mysterious Island.

Josie and the Pussycats
Although it's not the same Nemo from the original novels, rather than his great grandson following the legacy of Nemo, by calling himself Captain Nemo and sinking ships by a submarine like the Nautilus. But then Josie and the rest of the gang defeated and the coast guard arrested him and his gang. He was voiced by John Stephenson.

Trivia

 * Nemo is latin for "No Man"