Carrie Krueger/Relationships

Gumball
Carrie is shown to be a really good friend of Gumball. In "The Ghost " Gumball allowed her (somewhat reluctantly) to use his body so she could eat large amounts of food. When Gumball refused to allow her to use his body near the end of the episode, she attempted to forcibly take it, resulting in a brief struggle. However, the two quickly reconciled and seemed to be on good terms from then on.

Carrie also played a major role in helping to exorcise Jealousy from Gumball's body. After the ordeal, she gives Gumball a friendly punch in the arm, causing Penny to reveal her own jealousy.

In Halloween, Carrie took Gumball to a ghost party. When things got out of hand, she started getting deeply concerned about his safety, spending the entire night looking for him instead of partying. At the end of the episode, however, with Nicole glaring at her, she quickly abandoned him.

Darwin
Carrie seems to be on good terms with Darwin, who was the first to suggest using Gumball's body in "The Ghost". In "The Flower" Carrie (and Leslie) used Darwin's body as a shield from incoming projectiles. In Halloween, Darwin kisses Carrie immediately after becoming a ghost revealing that Darwin has feelings for her. All she does in response is blush. However, Darwin refers to her as an 'Emo Freak' in "The Words", offending her and making her run away.

Penny
Carrie and Penny seem to be friends, as they were both seen hanging out in Molly's treehouse in "The Pressure". At the end of "The Flower ", though, Penny gets possessed by Jealousy and angrily insults Carrie when she addresses Gumball at the end of the episode.

Rachel
Carrie seems to be good friends with Rachel as they are seen chatting in "The Third".