Mike Grell

from comic-con.org:
This prolific comics writer/artist started in the industry assisting Dale Messick on the syndicated comic strip Brenda Starr. Grell’s first comic book assignment was Superboy and the Legion of Super-Heroes in 1973. He went on to create The Warlord and to revamp Green Arrow for DC. His other creations include Starslayer, Shaman’s Tears, Bar Sinister, and Maggie the Cat. His most famous creation, Jon Sable, Freelance, was originally published by First Comics and is now appearing in a new adventure on comicmix.com.