Sage, also known as Tessa, is a fictional character in the Marvel Comics universe. She has most often been associated with the X-Men and the Hellfire Club, whom she spied upon for Professor Charles Xavier.
A mutant, Sage possesses a number of mental abilities and was originally presented as the personal assistant to the Hellfire Club’s Sebastian Shaw, but an extended retcon revealed that she had been one of the first mutants discovered by Professor Xavier. She has been a member of the original X-Men teams, the X-Treme X-Men, and more recently a member of the latest incarnation of Excalibur and the Exiles.
Tessa first appeared in The X-Men #132 (April 1980), and was created by Chris Claremont and John Byrne.
Sage's exact country of origin remains unrevealed, but she claims to have come from a war-torn region. By the time she reaches young adulthood, she is living by herself in Afghanistan. Although she tries to keep out of the conflicts between the rebels and the government, she is willing to use her guns and other weapons on any threat. One day, she feels herself called to a cave which is considered haunted by the locals. She hears a voice in her head that guides her deeper into the cavern, where she finds Charles Xavier, who is trapped underneath a pile of debris. His legs have been crushed during his battle with the alien Lucifer. Xavier senses that Sage is a mutant, and explains to her what her abilities mean. Sage says that this was about the same time as he located Beast, but in other accounts he found Sage first.
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