Ty Benson

Professor Ty Benson was a human xenozoologist whom the Tenth Doctor and Martha Jones met on the planet Sunday in 2108.

She was one of the First Wave of eight hundred settlers on the planet. Consequently, she endured a cataclysmic tidal wave which killed off half the original colonists and laid waste to Sunday City, the main settlement. She became involved in the reconstruction efforts to pave the way for the Second Wave.

She had a close, pseudo-parental relationship with Candy Kane, a teenager that helped her and her assistant Col with their research, particularly that having to do with local otters.

She was around sixty years old when she met the Doctor. (NSA: Wetworld)