Religion: not determined yet
Name: Sage
Alter Ego: Tessa Hartley
Other Names: Tessa Niles; Lady Tessa; "Diana Fox"; Britannia
Classification:
hero
Publisher(s): 
First Appearance: The Uncanny X-Men (vol. 1) #132 (Apr. 1980): "And Hellfire is Their Name!"
First Appearance (additional details): (as Tessa) The Uncanny X-Men (vol. 1) #132 (Apr. 1980): "And Hellfire is Their Name!"; (as Sage) X-Men (vol. 2) #109
Creators: John Byrne, Chris Claremont, Terry Austin
Number of appearances: 238
Teams/Affiliations: Council of the Chosen; Hellfire Club; X-Men; X-Treme Sanctions Executive; Excalibur
Occupation: spy, advisor, mercenary
Worked for: Sebastian Shaw
Gender: female
It is certain almost that "Tessa" is a pseudonym. The real birth name of the former Hellfire Club associate known as "Tessa" (who became known as the X-Man named "Sage") is, as yet, unrevealed.
This character is in the following 64 stories which have been indexed by this website:
Classic X-Men #6 (Feb. 1987): "Merry Christmas, X-Men... (supplement)"
Marvel Knights Spider-Man #6 (Nov. 2004): "Venomous: Part Two" (1-panel cameo)
Marvel Universe: The End #1 (May 2003): "Predestination"
New X-Men
The Uncanny X-MenX-51 #0 (1999): "A Mere Technicality"X-MenX-Men Unlimited (vol. 2) #6 (Feb. 2005): "Tempest in a Teapot"X-Treme X-MenX-Treme X-Men: Savage LandX-Treme X-Men: X-Pose
Suggested links for further research about this character:
- http://www.adherents.com/lit/comics/Sage.html
- http://www.comicvine.com/sage/29-4559/
- http://www.marvunapp.com/master/fosfoz.htm
- http://www.marvunapp.com/master/x0xmxz.htm
- http://www.comicboards.com/marvelguide/s.htm
- http://www.marvunapp.com/master/saasak.htm
- http://www.marvunapp.com/master/teotez.htm
- http://www.marvunapp.com/master/xaxz.htm
- http://www.comiccollectorlive.com/LiveData/Character.aspx?id=764c1b4f-1247-49a5-aa5b-b967af2096f8