Seonwoo "Infiltration" Lee is a fighting game player from South Korea. Infiltration is a six-time EVO champion. His victories were in Super Street Fighter IV: Arcade Edition ( EVO 2012), Street Fighter X Tekken (doubles and singles in EVO 2012 and 2013 respectively), Street Fighter V (EVO 2016), Street Fighter V: Arcade Edition (EVO Japan 2018), and Samurai Shodown (EVO 2019).

Infiltration is a multi-talented player that uses a defensive hit-and-run style. At the tail-end of Street Fighter IV's life cycle, he had learned how to play most of the game's roster, which he used to pick his opponent's counters to achieve victory. Starting in Street Fighter V as a Nash main, he moved on to Menat and Juri. Infiltration built up a long win streak early in the game's competitive scene, which was eventually broken by Zeng "Xiao Hai" Zhuojun and Daigo "The Beast" Umehara at DouyuTV U-League II.

Following a controversy surrounding allegations of domestic violence against his ex-wife, Infiltration was dropped by his team at the time, Panda Global. He also voluntarily withdrew from Capcom Cup 2018 and did not participate in Capcom Pro Tour 2019.

Infiltration currently plays for Korean esports organization, Afreeca Freecs. You can find him on twitter @INFILTRATION85 and on Facebook.