"In the initial draft of Twenty Thousand Leagues Under the Sea, Nemo was a Polish noble vengeful because of the murder of his family during the Russian repression of the Polish insurrection of 1863-1864. Verne's editor Pierre-Jules Hetzel feared a book ban in the Russian market and offending a French ally, the Russian Empire. He made Verne obscure Nemo's motivation in the first book. However, Nemo reveals an Indian ancestry in a scene where he saves a South Indian fisherman while on a scuba dive.
Read a review of the first book here:
Herbert Lom played Captain Nemo in Mysterious Island (1961)
Robert Ryan played Captain Nemo in Captain Nemo and the Underwater City (1969)
Omar Sharif played Captain Nemo in La Isla misteriosa y el capitán Nemo (1973)
Len Carlson played Captain Mark Nemo in the very loosely connected animated series The Undersea Adventures of Captain Nemo in the mid-1970s.
José Ferrer played Captain Nemo in the TV movie and short lived TV-series The Return of Captain Nemo (1978)
John Bach played Captain Nemo in the TV series Mysterious Island (1995)
Michael Caine played Captain Nemo in the ABC-TV miniseries 20,000 Leagues Under the Sea (1997)
Ben Cross played Captain Nemo in the NBC-TV movie 20,000 Leagues Under the Sea (1997)
Naseeruddin Shah played Captain Nemo (unmistakably as an Indian Lord) in the film adaptation of The League of Extraordinary Gentlemen (2003)
Patrick Stewart played Captain Nemo in the TV movie Mysterious Island (2005)