Little is actually known about Dominique other than she is a small female 5'2" very athletic, nimble, and stronger than she looks. She often dyes her hair purple, especially on missions, and wears a silver, black, and purple jump suit as her uniform. Her eyes are brown, and it is said that Mason England is her father. Her adoptive mother is Ti'Cira D'Arr Hawk.
Not much is know. As a little girl, she appeared at the Sith Temple, insisting she see her father Mason England, who was as surprised as anyone to see her there. Still the two hit it off and he trained her to be an assassin and at the age of 8 she became an unofficial Imperial Agent, Codenamed "Purple Rain"
Her main missions were to focus on drug dealers and smugglers such as Karin Dorn and Utkon Mai. After working as the Imperial Assassin and Agent for years, her life changed when she turned 14 and arranged an attack on the Rebel/Jedi world of Manaan. The attack was successful and the world fell to the Sith Order but under her guise of a frightened girl, Dominique found herself not wanting to leave her disguise and ended up staying undercover with the Jedi, especially the Knight, Ticira Hawk, because she felt loved, and attached, something she had rarely felt, even though she had done many missions with her father.
After Manaan, she left TiCira to return to the Empire and was assigned a mission to Nar Shaddaa, which after she completed it, Agent Red Seven, sent her back to Talus to report but it was a trap and her craft never arrived, instead it crash landed on a mysterious jungle world where she fought for survival only to find out the Imperials had betrayed her, Agent Red Seven leaving her dead on the bottom of a cliff before slaying all witnesses.
She was rescued by a Jedi Knight and eventually taken to TiCira Hawk who adopted her as her daughter, where she has stayed since, working now as a Rebel Operative with a cold hard attitude against the Empire and the Sith that had betrayed her.
It is rumored that Dominique is actually a time-traveler, sent back in time to make sure her mother meets her father and gives birth to her. This is unconfirmed, but would explain why she has aged jumped so frequently without any reason.