Serral (real name Joona Sotala) is a professional StarCraft II zerg player from Finland. He was the champion of the 2018 WCS Tournament, and was the first non-Korean player to win a championship.
Serral's portrait was added as part of the WCS 2017 Portrait Pack and WCS 2018 Portrait Pack.
On the Simulant console, if the player manages to do 1000 actions-per-minute, the APM counter will read "5-ERR-4L," or Serral.
Liquipedia - Serral