High Quality Content by WIKIPEDIA articles! Nemesis is the name of two fictional characters in the DC Comics universe. Thomas Andrew Tresser first appeared in The Brave and the Bold #166, (September 1980), and was created by Cary Burkett and Dan Spiegle. Soseh Myrkos first appeared in JSA Annual #1, (October 15, 2000), and was created by David S. Goyer and Uriel Caton.