Sage
Tessa
Xavier's secret operative, planted as a mole inside the Hellfire Club's Inner Circle for years. Sage possesses a computer-like mind capable of processing information at superhuman speeds and can jumpstart latent mutant abilities in others. She is the X-Men's most enigmatic member (a spy whose true loyalties were hidden even from her teammates).
Appearances Over Time
Most Appearances By Series
X-Force (2020) 53 issues
Wolverine (2020) 29 issues
The Uncanny X-Men (1981) 29 issues
X-Force (2024) 12 issues
X-Force (1991) 11 issues
X-Man (1995) 7 issues
X-Men: Die by the Sword (2007) 5 issues
X-Men (1991) 4 issues
The New Mutants (1983) 3 issues
Astonishing X-Men (2004) 3 issues
Event Participation
The Uncanny X-Men #132
1980
The X-Men #132
April 1980
Sage has a devoted following among X-Men fans who appreciate her unique "living computer" abilities and her compelling arc from Hellfire Club spy to trusted X-Man, particularly in Chris Claremont's X-Treme X-Men run. Her recent prominence in Benjamin Percy's X-Force series introduced her to a new generation of readers, though some question the shift in her characterization (especially her warmer relationship with Xavier compared to the tension that defined their X-Treme days). Fans worry she'll fade back into obscurity now that X-Force has ended, as she's cycled in and out of the spotlight throughout her history.