First Impression: An attractive woman.
Angela is a recent acquaintance of the Heroes. They came to the far north looking for a missing hacker, and instead found Angela, the woman who built their missing Hacker. Yes, their missing hacker friend Renee was, in fact, an Artificial Intelligence who lived in an extensive housing of nanoprocessors.
The heroes know very little of Angela, or how she came to live in the remote area she has chosen. They known only that her creation has helped them many times, and now Angela has turned her talents to aiding the heroes whenever she is able. Asked why, she will say only she has a few things to atone for.