Nina is one of Ayden's Pokémon currently residing at Ayden's home in Phenac City. She is also the mate of Nero.
Though slow and bulky, Nina prefers dealing damage from a distance of providing support for her mate, Nero. The two often prefer fighting together in a double battle, but Nina can easily hold her own. Most of her attacks are focused on range, but she has some close range attacks should an opponent get too close.
Ayden encountered Nina alongside her mate, Nero in Route 3 of the Kanto region. The two had been members of opposing herd of their species. Fearing that their love would threaten to destroy the foundation of their herds, Nina and Nero fled to live a life together. When they met Ayden, she challenged them to a double battle and while she caught Nina first, Nero took a little while longer.
She was primarily used by Ayden during her time in Kanto and now currently resides in her home in Phenac City.