Mark Edward Fischbach is Markiplier, “Professional Screamer – King of the Squirrels" YouTube celebrity specializing in “Let’s Play" gameplay commentary videos, sketch comedies, painful “Impossible Challenges," and spin-off parodies. Listed as one of the top 15 YouTube stars of 2015 by Huffington Post, the MarkiplierGAME channel tallies 11+ million subscribers and 3.9 billion views. Mark frequently collaborates with fellow YouTube gaming celebrities, and recently served as a co-host with actress Janet Varney for the 2015 South by Southwest Gaming Awards. Mark’s philanthropy efforts include participating in Best Fiends, the mobile-game charity competition, and donating proceeds from “King of the Squirrels" apparel to Doctors Without Borders.