A young imaginary friend created by Mac. He's at the core of his personality, clever and self-centered. Bloo has a slightly gentler personality; he developed a mischievous, jealous, greedy, narcissistic, and immature personality. He is a rebel. Bloo is abrasive, troublemaking, immature, jealous, and manipulative, partially due to his restless energy, cleverness, and delusional narcissism. He is often a hyper, albeit nonchalant personality and is sometimes incredibly naive and childish. 