Daisy Wick is one of the interchanging interns. She was in a relationship with Lance Sweets, who proposed to marry her in the episode The Bones on the Blue Line. But the two eventually broke up due to Sweets realizing he didn't want to commit to her.
She is honest and devoted, but many find her irritating due to her lack of impulse-control and her non-stop talking. She is prone to blurting out whatever she's thinking, which conflicts with Dr. Brennan's personality.
Dr. Brennan finds Daisy to be irritating and has fired her twice. However, Brennan is still Daisy's biggest idol. In The Skull in the Sculpture, Daisy shatters a skull even after Dr. Brennan insists on caution, which puts a strain on their relationship. Surprisingly, they were seen bonding in A Night at the Bones Museum over the identification of the mummy Anukh. In the season 5 finale, Daisy joins Dr. Brennan on a year-long anthropological dig. The two also cooperate well in the season 6 premiere as they navigate the Maluku Islands. Over time, Brennan has developed a friendship with Daisy and once invited her to her bachelorette party. When Sweets dies in season 10, it's shown that Brennan has come to like Daisy and in a way 'mothers' her. When the baby is born Brennan and Booth are there for Daisy and the baby.
Daisy and Sweets had a romantic relationship from the season 4 episode The Skull in the Sculpture, which was revealed after Sweets volunteered to fire Daisy. He points out that they don't have to hide their relationship anymore, and the two kiss on the forensic platform. Sweets proposes in The Bones on the Blue Line after having been cold and distant from Daisy, making her fear that their relationship would end. Daisy accepts his proposal, but when she decides to go to the Maluku Islands with Dr. Brennan, Sweets tells her that he won't wait for her, and he rejects her request to become engaged upon her return in the season 6 premiere, though the two make up at the end of the episode. In the season 8 episode The Tiger in the Tale they broke up. In the season 10 premiere, it is learned that Daisy and Lance got together and Daisy is now pregnant with a baby boy. She announces that Booth is the godfather. Unfortunately, Daisy's life is changed dramatically, when Sweets is murdered by an unknown assailant; leaving her as a single mother to their unborn son, Seeley Lance Wick-Sweets.
- In The Bones on the Blue Line, Daisy tells Hodgins that she can speed read, which she's been doing while reading Dr. Brennan's new book, Bones of Contention.
- In The End in the Beginning, Daisy was re-imagined as the coat-check girl at Booth and Brennan's nightclub.
- Daisy comes from a 'dysfunctional family' and has no sisters.