Powers: Karen is a "telepathist", capable of sending her mind to other time periods and perceiving events there as if her body were present.
Weaknesses: When time-travelling through telepathy, Karen is subject to extreme psychomatic feedback, to the point of running risk of life and limb depending on what happens to her mental body.
Her travels are also subject to the conditions of her nervous system and can be endagered by neurological trauma.
Bio: Karen underwent missions to investigate the distant past. An accident put her in danger, requiring the intervention of Jeff Lyendecker. While succesful, the rescue brought serious complications of its own.