Prof. Power
In-Game Bio
Penelopie Power led a full life even after she left the spotlight of child stardom.
Although the tragic loss of her arm limited her actions as a hero, she remained a vocal advocate for heroes and victims alike and never quite gave up on adventuring. She founded over 30 heroic studies programs at universities around the world, has "assisted" on countless Portal expeditions to alternate universes, and so many rumors of time travel persist about her that some circles even address her with the title of "Mender."
5 years ago she withdrew from the public eye entirely. Her book, I Mistook You for Somewhen Else which made the case that the human mind was ill-equipped for experiencing vast numbers of alternate timelines or dimensions was seen as autobiographical by many, but it also coined the name "Alt-timer's" for the erratic behaviors of many a time-traveling mad scientist.
When asked why she chose now to return, she'll only say, "It's time."
Background
Losing her left arm put Penny Power's hero career on hiatus for a few years. Her body continued to send her energy-fist manifestation to the missing limb, destroying prosthetic and cybernetic alike (and even causing considerable damage to the stump in extreme cases) until Rikti tech was repurposed to shunt the energy away safely, creating a shieldlike energy manifestation. This allowed Prof. Power to re-join the depleted hero forces after the 1st Rikti war and provide much-needed relief to the city.
(more to come)