BlooBerry

BlooBerry is the het ship between Bloo and Berry from Foster's Home for Imaginary Friends.

Canon
In Berry's first appearance in the series, "Berry Scary", she had arrived at the Foster's in search for somewhere to stay, even having luggage as well. Though, as soon as she had seen Bloo, she falls madly in love with him. However, throughout the episode, her other side could also be seen with quick jerks of movement, especially when she saw Bloo with his creator, Mac. While she disliked how close Mac and Bloo are, she still retained her "nice side."

After meeting Mac, she was determined on impeding on Mac and Bloo's friendship due to her mad love for Bloo. While both Bloo and Mac are attempting to break world records, she disrupts many of them with various tactics. Later on, Bloo and Berry meet up where she would then convince him that Mac is in the way of Bloo and that they together can achieve them together, without Mac. However, near the end of the episode, she had made the world's biggest rubber band ball which was only one band short of becoming it's world record.

Berry and Bloo are about to put it on when Mac interferes and cuts the rubber band, leaving her hanging. Although she does remark about it being the last rubber band, Mac reveals that he has another one that Terrence hit him with. Mac straps the band to the ball while doing so, straps Berry to it. This enrages Berry causing her to show her other much darker side as she starts screaming about her love for Bloo and insulting the Foster home. Then, The large ball starts rolling down the halls and out of the house, caused by her unstoppable squirming.

Berry reappears in "Affair Weather Friends", disguised as a rich kid named "Barry Bling" but does not reveal herself until near the end of the episode. She traps Mac by tying him to a rubber band ball before hopping into a small train trying to kill him so that he won't interfere with herself and Bloo, becoming Berry's date with destiny forever. As Bloo prepares to save Mac, Berry throws an automatic paddle ball that he had been interested in since the beginning of the episode, as Bloo is deciding between his love of the paddle ball or his friendship with Mac, Berry is about to kill Mac, Bloo ends up saving Mac, causing Berry to ironically get caught in the rubber band ball again (along with the toy train she rode), as well as yelling "AAAHH! Why does this keep happening to me?! AAAHH! What a world, what a world!!" This is her last appearance in the entirety of the show. What happened to her afterwards is unknown.

It should also be noted that Bloo only remembered Berry by the name "Heather" which is the name he said she looks like in "Berry Scary."

Fanon
There are many BlooBerry shippers, and there's lots of BlooBerry fanart existant up to today.

Trivia

 * BlooBerry is the only Foster's Home for Imaginary Friends ship to have became canon, though partly.