Lee Young-ho (born 5 July 1992 ???) is a South Korean StarCraft: Brood War and StarCraft II player who played Terran for the Korean pro-gaming team KT Rolster under the alias By.FlaSh or simply Flash.
He made his debut as a StarCraft: Brood War player in 2007 and retired on December 19, 2015.
Lee began playing StarCraft II competitively in 2011, until his retirement in December 2015.
He subsequently returned to playing Starcraft: Brood War, and started his personal broadcast in February 2016 on the AfreecaTV personal broadcasting platform.
Since returning to Brood War, Lee has won first place in Seasons 2, 3, 4, and 8 of the Afreeca Starleague.
As of 2019, he is still broadcasting personal broadcasts.