Character/Marvel
Jordan Boone, typically from Earth-928
Loki first appeared in X-Men 2099 #5 (1994-02), published by Marvel. 5 appearances are indexed across 5 series.
Character history
X-Men 2099
#5
1994-02-00
Across the catalog
Ravage 2099
1992–1995
1 issue →
Doom 2099
1993–1996
Spider-Man 2099 Classic
2009–2017
Spider-Man 2099 Omnibus
2023–