Ozy has a twin sister, Tia, who he forgets to mention a lot. She's like her brother in a lot of ways, nerdy, smart, and similarly endowed, though usually has more back pain than Ozy.

Shes usually a bit more prudent and shy than her brother, and a bit more in control of her rather large libido, unlike her brother, something which she points out every time she catches him in the act (which is a lot... ) , which is also why both of them are rather open with each other.