Frank Buffay Jr. (born October 25, 1978) is Phoebe and Ursula Buffay's half-brother. Phoebe discovers Frank on one of her attempts to find her father Frank Buffay Sr., who walked out on her and her twin sister when they were children, and later also walked out on Frank Jr.'s family. Frank Jr. has a punctured lung, was arrested for stealing birds' eggs, likes to melt things, and used to own a dog named "Tumor". He also believed that 'massage parlor' is a euphemism for brothel, wrongly presuming that his sister Phoebe was a prostitute.