Nelson is a boxing prodigy that lost an arm after a terrible accident, but has been able to quickly return to the ring thanks to advanced robotic prosthetics. He fights to seize the world championship while hoping his fiancée will someday awaken from her coma. In the past, it is revealed that Nelson is responsible for Tizoc's harsh defeat and the reason for his heel persona, King of Dinosaurs.
In his team ending, his fiancée awakens from her coma. Nelson is completely unaware that the scientists who gave him a cybernetic left arm were responsible for his accident and attempting to use him as a test subject. Before he goes to see to his fiancée, Nelson advises his teammate, Bandeiras, to try and not scare people while advertising his new ninja school in Japan or else he may get himself arrested.
Nelson is generally a relaxed person outside of battles, but is also very loud, confident, and energetic while in the ring. He also proves to be nice and loving, especially to his fiancée.
- Aerokinesis/Fast Punches - Thanks to his arm, Nelson can create small wind currents around some of his punches and perform an invisible multi-hitting attack that's presumed to be wind. However, that move could just as easily be him punching too fast for the human eye to see.
- Power Punch - Another power coming from his arm, Nelson's incredible punching power can even hurt giants like Xanadu, Chang Koehan, Goro Daimon, Maxima, Antonov, and Verse.
Nelson is very skillful in all kind of sports. The reason for this is to keep himself away from losing weight.
Nelson relies heavily on punching attacks, with his feet providing agile footwork. He also has a mechanical prosthetic arm on his left arm, which may be enhancing his punching power on that side. Some of his moves also resembles Heavy D!'s moves from KOF 98.
- COCO - The King of Fighters XIV
- SNK Heroines: Tag Team Frenzy - in Zarina's ending