[2] He graduated from Hesperia High School, where he used to participate in its plays, and expressed an interest in acting and working in the entertainment industry.

He competed individually with other contestants from Latin America and the United States before the show's judges, Ricky Martin, Alejandro Sanz and Laura Pausini.

On December 13, the finale of the show, Pimentel, Christopher Velez, Richard Camacho, Erick Brian Colón and Zabdiel de Jesús were chosen to form the boy band CNCO.

[5] The band went on to release their debut EP Qué Quiénes Somos in October 2019, which featured songwriting from all members on almost all the tracks.

Their last album as a quintet, Déjà Vu, was released in February 2021 and is a visual cover project featuring classic songs from Latin music.

[6] Pimentel appeared in the music video of "No Soy Yo" by Argentine singer Emilia Mernes and Puerto Rican rapper Darell, alongside Oriana Sabatini and Johann Vera, released on YouTube on September 2, 2019.

[8] Pimentel chose to use his maternal last name, De León (stylized as DELEŌN), to honor his grandfather, who taught him to sing and initiated his love for music.