In quinceañera traditions, a male attendant or escort is usually called a chambelán.
Chambelanes form part of the honoree’s corte de honor, or court of honor. They may accompany her during the formal entrance, stand with the court, and perform a rehearsed dance at the reception. The number of chambelanes is not fixed, and some contemporary celebrations use mixed-gender attendants or choose a different arrangement.
The word is related to the Spanish term chambelán, historically used for a chamberlain or court official. In quinceañera usage, however, it describes a ceremonial companion rather than an employee of a royal household.
A chambelán is not the same as a padrino. A padrino is a sponsor or godparent-like supporter who may help provide financial or ceremonial assistance. A quinceañero, meanwhile, generally refers to a male celebrating a comparable fifteenth-birthday milestone, not specifically to an attendant.