Nadia

Nadia is a 14 year old (15 toward the end of the series) who works in a circus as an acrobat in order to survive, since she is an orphan and of unknown origins. She is chased by Grandis and her associates Sanson and Hanson, who are looking for the jewel that Nadia possesses, the Blue Water. While escaping from them, she meets Jean, and from that moment the two of them will be together in the series, where she tries to discover her origins and find out the truth about her past and the Blue Water, the jewel that seems to have an enormous intrinsic power.

Nadia is quite stubborn, easily irritable, socially inept, and has the ability to talk with animals. For example, she is able to communicate easily with her little lion, King. Nadia is also known among those who have knowledge of the blue water for being its possessor. She even happens to be a strict vegetarian and believes that there is no excuse for eating meat or killing (although her friends attempt to justify their reasons for doing so). Because of her unhappy past, Nadia is even extremely suspicious of all grown-ups--particularly Nemo. As a result of her growing love for Jean however, she comes to learn valuable lessons about friendship, respect, and trust for those around her.

In the epilogue told by a grown-up Marie in the last episode, Nadia has married Jean and they have a child. While Nadia is still a dedicated vegetarian, she is not aggressively so (as evidenced from her meals of meat and fish for Jean and their son).

Source: Wikipedia