Tyler Steinkamp (born March 7, 1995), known professionally as Tyler1, is an American online streamer and professional League of Legends player. Steinkamp first gained notoriety when he was indefinitely banned from League of Legends in April 2016, due to disruptive conduct towards other players; his behavior earned him the nickname "The Most Toxic Player in North America." He was unbanned in 2018 after an appeal; his first stream after reinstatement peaked at over 382,000 concurrent viewers on Twitch, which broke a non-tournament record on the site.
https://en.wikipedia.org/wiki/Tyler1