Dr. O’Sullivan, like Dr. Gray, is also very tall and loves video games.
However, Dr. O has a full head of hair, which he likes to remind Dr. Gray about almost daily. Dr. O’Sullivan grew up in Tulsa, Oklahoma. He attended Notre Dame for his undergraduate degree (Go Irish!). After Notre Dame, Dr. O'Sullivan returned to Oklahoma, attending OSU for his DDS and orthodontic residency.