[2] In August 2022, having trialled with them earlier in the year, Peña joined Spanish side Real Betis on a two-year loan, alongside fellow Costa Rican Santiago van der Putten.
[2] While van der Putten was immediately brought into the squad with no work permit issues due to his Dutch heritage, Peña had to wait to receive his visa.
[6] He made his debut for the club on 3 August 2023, coming on as a substitute for Lukáš Štetina in a UEFA Europa Conference League qualification match against Latvian side Auda.
However, a mistake by Peña allowed Auda's South Sudanese forward Manyumow Achol to take the ball and go on to score, though it was ultimately only a consolation as Spartak Trnava went on to win 4–1.
[7] Having represented Costa Rica at youth international level, Peña was called up to the senior squad for the first time in June 2023 for a friendly against Ecuador, following an injury to Youstin Salas.