Sage's team affiliations

Sage is a mutant with a computer-like brain. She can process large volumes of data with great efficiency, and has a photographic memory that allows her to recall anything she needs. She also has the ability to detect and manipulate the genetics of others. So far this ability has been used to unlock latent mutant abilities in normal humans, and to unlock hidden aspects of mutant powers. This ability works closely with her computer-like mind giving her the ability to quickly analyze and understand the subject's DNA. Sage exhibits strong willpower which protects her from certain telepathic attacks. She also has low level telepathic abilities which allow her to interface with others, which she can shut off at will to lock others out of her mind.

When Sebastian Shaw took over the New York Branch of the Hellfire Club he renamed the Council of the Chosen, they became the Lords Cardinal. And though she wasn't officially given a title, Sage aka Tessa became his personal aide and was a member of the team's Inner Circle. She left the team during the period wherein others ruled but she returned again to her former position when Shaw took over again. After that Selene took control of the Club but Shaw took control and she was once again Shaw's personal aide but when Sunspot took on the position of the Lord Cardinal, she became his personal adviser. Currently though she has left the Hellfire Club for the Exiles.

Breaking away from Professor X, Storm formed a team with the purpose of recovering the prophecies written in the diaries of the precog Destiny.