Parker is Madame Vastra's Coachman. Although he has seen her appearance, he has never once asked questions about it, and continues to respect her privacy.

Parker is often helping to get Vastra to places or helping her escape from them.

Jenny is both Maid and loyal companion to Madame Vastra. Having been put on the right track by Vastra, Jenny jumped at the chance to aid her in her quest to rid the streets of London of evil. Though inexperienced in combat, she is a fast leaner, and eager to please.

"She's definitely a girl" - Madame Vastra
"Oh, stop it!" - Jenny

Young, impressionable, but far from innocent, Jenny is Vastra's greatest asset. Whether it be backup, bait, or someone to make the tea, Jenny is there in a heartbeat.

Madame Vastra is a female Silurian warrior, who had awoken during the construction of part of the London Underground in the late 19th Century. She had sought revenge on those responsible of the deaths of her "sisters," but was convinced not to give into her rage by the Doctor.

"Was I being insensitive again, dear? I don't know why you put up with me."

Instead of killing innocent people, Vastra made a home in London, hiding her Silurian form from people, and acting as a freelance crimefighter. Along with Jenny, her Maid and trusted companion, she hunts and disposes of the evil in London. While she keeps her identity a secret, there are a few people who know who and what she really is.