Aunt Vanessa

RIP down under.
Even she got her own action figure before her niece did.

Aunt Vanessa was driving her niece Tegan to the airport one morning when she got a flat tire. As Tegan ran off to get a new one (because she's a strong independent woman), Anthony Ainley turned up and asked her and a police officer to go down on him. They did.

Vanessa served as Tegan's version of Vicky when she wanted to explain her reason for leaving the TARDIS; "My Aunt Vanessa said, when I became an air stewardess... If you stop enjoying it, give it up. It's stopped being fun, Doctor. Goodbye..."