Asier Etxeandía studied acting at a Biscayan school, of which he only keeps fond memories of two teachers, Eguzki Zubia and Juan Carlos Garaizabal.

He recently commented on its beginnings, noting that "when you are 19 years old, you trust your teachers to the end and sometimes they are not qualified, but in need of your admiration.

The Globomedia production company hired him during the first season of One Step Ahead, where he played Beni, a homosexual who entered an arts academy with the hope of becoming an actor.

[2] Natalia Millán thought of him to star in the musical Cabaret offering him the role of Master of Ceremonies, the one in charge of commenting ironically on the events that take place in Germany in the 1930s .

He was cast in Pedro Almodóvar's Broken Embraces, playing a small role as a blind waiter, which was not included in the final cut, but whose scene is part of the additional content of the film on DVD.