Once powerful as a god, these days she mostly hangs around Starfleet, hiding from a unknown force..
Cunning, but not a prankster like her relative from the series. Third is curious about the human nature, but also a slight misanthrope as she has doubts the humanity will ever be anything but a gang of primates playing around in space. She has found enjoyment in music, but most of all she loves the beauty of the outer space, and the wonders created there each day. She might be slightly naive in some cases, or a bit of a social retard in others, but she does her best to act human and through this learn as much as she can about them.
Powers:
Conjuration, the ability to make illusions that are unable to interact with fellow beings, but still seem real.
Disguise self, the ability to change her appearance completely at will, only with a second of concentration.
Minor teleport, the ability to teleport within the distance of 100 feet.
Telekinesis, the ability to move objects with her mind. Her limit is her own natural strength. Which is not very strong.
Emotionless, though she may pretend to have them, she doesn't.
Hard to kill, because of her heritage, but not impossible.
It should be noted that as she is pretending to be human, she will be reluctant to use any of these powers in the vicinity of anyone else.
Not much is known about Third. There's only one who knows about her true nature, and even this person is unaware of what exactly took most of her powers away and has scared her into hiding within the Federation. To other people, she says that she's a simple girl from earth, and that she's lived most of her life "in the country".