Sean Tolkey

Sean Tolkey
Cathy's brother. Sean is an eccentric, homeless anti-establishment environmentalist. He is frequently dirty and eats out of garbage cans. Though somewhat removed in their relationship,

Cathy begins making a concerted effort to get closer to him after she is diagnosed with cancer. He starts a relationship with Cathy's college friend Rebecca; it ends badly. At one point Cathy reveals her illness to him and he has an emotional breakdown; she reneges, claiming she made it up to get a reaction. He and Rebecca are going to have a baby together.