In 2000, he went to work on MTV Brasil, hosting the shows Supernova and Piores Clipes do Mundo (Worst Videos in the World, in Portuguese).

With the success of the latter, Mion was hired by Rede Bandeirantes in 2002, where he hosted the show Descontrole, known for a lot of live improvisation.

However, in October 2021, after his tenure resulted in a positive response and viewership gains, Mion was made the full-time host.

[10][11] Mion has also contributed to music festival coverage for sister network Multishow, including Rock in Rio and Lollapalooza Brasil.

[12] In 1994, his older brother, Marcelo, died after an accident at the São Paulo Museum of Art, in which he fell in the ground-level plaza under the building's sizeable free span.