Dr. Christian Troy
as Julia McNamara
The ex-wife of Dr. Sean McNamara and the mother of Matt (whose biological father is Dr. Christian Troy), Annie and Conor.
as Matt McNamara
The biological son of Christian and Julia, who considers both Christian and Sean to be his fathers.
as Dr. Liz Cruz
The outspoken lesbian anesthesiologist at McNamara/Troy who often challenges the views held by Sean and Christian.