Seifer

Seifer, a Final Fantasy character from Final Fantasy VIII, who resides in Twilight Town. He is always seen with his posse Fuu, Rai, and Vivi. He often picks fight with Hayner and his gang, rivaling with them.

He first appears in Kingdom Hearts II, but also plays a role in Kingdom Hearts: Light by Darkness.

Kingdom Hearts: Light by Darkness
Final Fantasy VIII

''Being the self-appointed head of the "Twilight Town Disciplinary Committee", Seifer is usually picking fights with others. ''

''He tries his best to keep the town up to his own standards, much to Hayner and his gang's dismay. His followers Fuu and Rai are always seen with him.''

Kingdom Hearts: Light by Darkness
Hayner asks Sora to enroll in the Struggle tournament because of the fact that Seifer once again is the current champion, right when Hayner became champ a while back, for a short amount of time when Seifer quickly beat him.

Sora agrees, and Seifer is first seen in the last match of the Struggle tournament, and gets beaten by Sora. Seifer gets angry, but quickly keeps his anger from getting the better of him. He hands the trophy to Sora afterward, with Hayner and his gang cheering. He then walks away with Rai, asking where Fuu was. Later on, he gives the player a quest, and is also one of the people battling in one of the Struggle tournament matches.