Ann Possible

Fanfiction and Rule 34 art devotes a lot of energy to Kim and her mother finding ways to pleasure each other. A fairly frequent version has Kim hit with some sort of futanari weapon/spell/potion which results in a raging hard-on the poor girl doesn't know what to do with. Fortunately her dear mother is always there to lend a helping hand... or mouth... or cunt... or ass. There is a good chance Kim is Ann's most common partner in adult fanfiction.

Not that a cock is required for Kim and her mother to have at it with each other, they manage very well with strap-ons, or oral or a scissors position.

And the two women are frequently in a larger family group, either with James or with Jim and Tim – and on rare occasions the two women will serve the pleasure of all three.