Riff Conner is a man who has probably introduced 1000 Blank White Cards to more people than any other cool dude. He is also on the Kingdom of Loathing staff, which is an online MMORPG with a similar aesthetic to 1kBWC.
Riff is also responsible for giving 1kBWC more of a gamelike structure, as is detailed in the above link. He is also the original creator of the often-ripped-off Stickman Genocide card.