- Name:
Maddison Grey
- Age:
21 in season 1, 22 in season 2
- Graduated high school at 14, graduated college at 18, graduated a short time before the first episode of the first season
- Derek and her bump heads every now and then
- Mark doesn't have a daughter or grandson in this story
- Very reserved when meeting new people, but can be very outspoken when she needs to be
- Has a complicated relationship with her mother, especially when she becomes lucid from her Alzheimer's and tells her that she doesn't approve of Mark
- She becomes a triple board certified surgeon in fetal surgery, OB/GYN, and neurosurgeon
- She respects Bailey, but puts her in her be place when she gets out of line
- She is a resident and shares the inters with Bailey