- “We're going to be together… FOREVER!”
- — Berry in "Berry Scary"
In "Berry Scary", Berry had arrived at Foster's in search for somewhere to stay, even having luggage as well. Frankie offered to get her luggage. Instead, Berry politely declines her offer since she did not want to be a burden. Then Bloo came with his paddle-ball, and claims that being a burden is one of his favorite things to be. From that moment on Berry instantly fell madly in love with Bloo. After Frankie gave her the tour, she decided to follow Bloo around, and do stuff for him such as baking him snicker-doodles or making him a scrapbook of just the small encounters they had during the morning. She even tried to finish building the world's largest rubber band ball with him until she was interrupted by Mac.
She returned in the episode "Affair Weather Friends." She disguised herself as a rich boy named "Barry Bling", so that she can have Bloo all to herself. Later in the episode when Mac found the macaroni sculpture of Bloo, he then realized that Barry is none other than Berry. Bloo always gets her name wrong, but as shown in "Affair Weather Friends", he still remembers her by the name "Heather" and states she was a good kid. Whenever Bloo compliments Berry, she sees it as if he really likes her. She also mentioned in her last appearance that he is "such an idiot" but loves him anyway, making her apparent love for him questionable.
Berry also committed a number of serious crimes, just to get close to Bloo.
Despite the canonical events between Berry and Bloo, many fans still support them as a couple. Since the late 2010s, there have been lots of BlooBerry fanart. There have been fanfictions involving the BlooBerry ship as well.
- BlooBerry is the only canon Foster's Home for Imaginary Friends ship.
- The ship's name is a pun on "blueberry".