Skullfire
Skullfire (Timothy Fitzgerald, typically from 2099 universes) appears in 8 issues in grailworth's catalog, and was first published in 1993.
Every appearance we value
Doom 2099 (1993) 1 issue
The End 2099 (2026) 1 issue
X-Men 2099 (1993) 2 issues
X-Men: Blue (2017) 2 issues
Character appearances from the Grand Comics Database, CC BY-SA 4.0.