Matyáš Tomka (born: April 24, 2001 [age 22]), better known online as MaTTem (or MaTTemicek) is a Czech YouTuber, gamer, and vlogger. Matyáš used to be a part of the famous 'Studiomoontv crew' (2016-2018) which got him big support in his early times. Buy Mattem Merch Here! #mattemmerch #mattemmerchandise