Cindy Wu

Cindy Wu was a friend of the Tenth Doctor's companion Gabby Gonzalez, and became involved in many of their adventures, eventually becoming a companion of the Doctor's alongside Gabby.

Biography
Cindy was born in Canada. (COMIC: The Wishing Well Witch)

She and Gabby lived in Brooklyn in the 21st century. She said her dad loved his children, but "the weight of his expectation would crush you." She was going to college for social science.

One day, while Cindy was hanging out with Gabby in Gabby's family's laundromat, all the washing machines malfunctioned and exploded around them. The two girls cleaned up the mess. Later, Cindy became possessed by a Cerebravore and tried to break into the laundromat, where Gabby barricaded. (COMIC: Revolutions of Terror)

When Gabby returned from her travels with the Doctor, she told Cindy about them. (COMIC: Echo)

Initially, Cindy attributed these stories to Gabby's imagination. When Gabby received a disturbing message from the Doctor, Cindy insisted on following her to the Upper East Side and found herself in Dorothy Bell's apartment just in time to witness her rejuvenation. (COMIC: The Fountains of Forever)