In 2007 he appeared in the Ugly Betty episode "A Tree Grows in Guadalajara as Antonio Barreiro, a cafe waiter.

[citation needed] Bethke also starred in "Tierra de pasiones", and in Madre Luna as Demetrio Aguirre.

He is also one of the main characters in Doña Bárbara (Telemundo series), playing the role of "Antonio Sandoval".

"[citation needed] Bethke has also guest-starred on the 1st season of RBD: La Familia as "Alvaro"; Dulce Maria's new hot conquest, on episode 3 "El Que Quiera Azul Celeste... Que Se Acueste!".

His cast members were Alfonso Herrera, Anahí, Dulce Maria, Christopher Uckermann, Maite Perroni, & Christian Chávez, the stars of the show and the members of the Latin pop band RBD from Mexico city.