Daniel Aaron Marcos Moreno [1] (born March 7, 1993) is a Peruvian professional mixed martial artist.

He wanted to play for "U" (Club Universitario de Deportes), but he couldn't due to financial reasons.

[4] Marcos worked as a mobile phone lines salesman until his coach convinced him to quit his job to pursue mixed martial arts.

[7] In his early professional MMA career, Marcos fought in Peru, accumulating a 12-0 record with seven finishes, all by TKO or KO.

[8] He became the bantamweight champion of 300 Sparta by facing Wanderson Targino on March 10, 2017, where he won the fight by unanimous decision.

[8][1] On September 13, 2022, Marcos faced Brandon Lewis for a UFC contract on Dana White's Contender Series Season 6, Week 8.

[15] However, Santos pulled out due to undisclosed reasons and was replaced by promotional newcomer Victor Hugo.