Darcy is the younger sister of Lisa Landry. Lisa and Darcy have a messy relationship contributed mainly to Darcy. A few things Lisa and Darcy did:
- Lisa gave Darcy an easy bake oven for Christmas, and then cooked for her when they were little.
- Darcy married Lisa's boyfriend.
- Darcy took Lisa's sweater and never gave it back in the 8th grade.
- Darcy stayed with Lisa for 8 months rent-free.
A few things Darcy does in Season Five, Episode Twelve:
- She flirts with the twins' boyfriends and Ray.
- Flirts with Nurse who taking her into surgery and manipulates him into letting her stay with him post-surgery.
- Compliments her sister, Lisa in order to manipulate her into making things for her.
- Examples: tea, home cooked meal, and to let her stay in their home.
Darcy tells Lisa she's getting surgery and is dying, but the twins later find out that she’s getting bunion surgery and trick her into admitting it.
Charmin Lee plays Darcy in the season 5 episode In Sickness And In Health.