Who Is It? for 1/28

Remember, tell me who it is, and on what clue you figured it out.

1. This creator had a multi-issue stint as artist on an Ultraverse title.










2. This creator did work on a number of DC's "Big Book of ____"s.









3. This creator contributed to Negative Burn in the 90s.













4. This creator wrote a story in the most recent Marvel Holidays Special.










5. This creator invented "The Intermen."

Who is it?