From Chaosium page:
Ken is a long-time Chaosiumite. In the olden days, Ken was an early playtester for RuneQuest, Raiders & Traders, Reich, Superworld and numerous other titles. Some of his roleplaying characters were members of the Humakti Fellowship of the Wooden Sword (Londra of Londros), and his character Urrg terrorized the Sazdorf troll tribe. If you ever purchased some of the old Chaosium boxed adventures in the '80s and '90s, Ken probably collated them for you.
Ken handles the shipping for Chaosium, both wholesale and retail. The illustration shows Ken in an uncredited poster found along the Haight/Ashbury district of San Francisco.