User blog comment:BMHKain/Upcoming Battle Hints (BMHKain Styled)/@comment-26955214-20160402155524/@comment-25968390-20160402161214

The Name was a reference. Besides, the answer's game of origin took place in present day Earth, LONG after Nemo died... They simply used the name as he is affiliated with the Deep Water Below (In the novel, the Nautilus had no real defense towards Giant Squids IIRC.)  I also remember Shaka Zulu being an opponent as well. He represented the African Savannah and he was also Non-Canon in reality. My best bet as to how these (then) 6 famous entities were even mentioned was that it was probably their memories that made the creators use such Dragons in the first place. those two, and four others I can't remember, were famous for their efforts for history (Even if some are fictional...)...

That's all I know...