Coleen Apura Trinidad, also known as Coco, is a Filipina performer from Pasay, Metro Manila. Before joining OONA, she was part of MNL48’s first generation, giving her years of experience in idol performance, fan engagement, and stage work before entering OONA’s debut lineup.
Coleen is also described as musically inclined, with profile sources listing piano and guitar among the instruments she can play. Her interests include Mobile Legends, music, and performing, while her listed favorite colors include purple, black, white, red, and brown. Since her official OONA position has not been clearly confirmed, she should be listed as a current member rather than assigned a fixed vocal, dance, or rap role for now.