Carlos Javier Martínez (Carlos Gronlier) was born in Havana, Cuba in 1996. At 13 he was cast as one the leads in Carlos Quintela's debut feature La Piscina (2011) He is a graduate of the San Alejandro Academy for visual Arts and studied at the Superior Institute of Arts ISA. His second film as actor is Blue Heart (2021) a film by Miguel Coyula which was 10 years in the making.