In Torchwood, this role is filled by Gwen Cooper, and later her husband Rhys Williams.

It only features the characters of Captain Jack, Gwen Cooper and Ianto Jones.

On the night before her wedding, Gwen Cooper (Eve Myles) is bitten on the arm by a male shape shifting alien.

At St. Helen's hospital, Gwen Cooper leads Stella to where Jack's body lay.

Emma-Louise bonds with Gwen Cooper, and discovers that love is much more promiscuous than in the 1950s.

Of the regular characters to appear in Torchwood previously, it only features Captain Jack, Gwen Cooper and lanto Jones.

Gwen Cooper, her husband Rhys and Ianto Jones, due to their association with Jack, become fugitives from the law.

As Gwen Cooper arrives in Mermaid Quay, she is greeted by a tourist in much the same way.

Gwen Cooper (police liaison, alive)

And in the latest series of Torchwood, Gwen Cooper took the protective mum role to the extreme, engaging in a shoot-out while holding the baby.