Marcos Martínez, better know as Grison, is a Spanish beatboxer and looper.
Achievements[]
2014[]
- 1st place (Solo) – Spanish Beatbox Championship 2014
- Top 8 (Loopstation) – Grand Beatbox Battle 2014
2013[]
- 1st place (Loopstation) – Grand Beatbox Battle 2013
- 1st place (Loopstation) – BOSS Loopstation World Championship 2013
2012[]
- 2nd place (Solo) – Spanish Beatbox Championship 2012
2010[]
- Top 8 (Solo) – Spanish Beatbox Championship 2010
2009[]
- Top 8 (Solo) – Spanish Beatbox Championship 2009