Castillo began his battle rap journey as an emcee for the underground league Gerahay Letra. His undeniable skills were eventually discovered by Anygma in 2019. Castillo then made his FlipTop debut at the first Won Minutes event in Cebu, beating Jahmen J via unanimous decision. In November 2021, he and fellow Ilonggo emcee Arma teamed up to face Vitrum and Illtimate in Metro Manila. They lost the battle, but they were still able to impress the viewers with their chemistry and overall performance.
Castillo bounced back from his Metro Manila loss at Ahon 12 by defeating Bagsik in a heated battle. Since then, he’s been considered a legitimate threat in the league. Apart from his confident stage presence, Castillo’s mix of hard-hitting and funny bars is also his biggest strength.