Gender: Boy, Age: 12, MBTI: ENTP (Debater), Blood Type: B, Family: Eldest son (Anais's brother, Darwin's adoptive brother)

Gender: Boy, Age: 12, MBTI: ENFJ (Protagonist), Blood Type: O, Family: Second son (Adoptive) (Gumball's brother, Anais's brother)

Gender: Boy, Age: 12, MBTI: ESTP (Entrepreneur), Blood Type: B, Family: Second son (Has an older sister and brother in higher grades)

Gender: Girl, Age: 12, MBTI: ENTJ (Commander), Blood Type: AB, Family: Only child

Gender: Girl, Age: 12 (Mental age) / Actually a ghost who has lived for centuries, MBTI: ISFP (Adventurer), Blood Type: Unknown (Ghost), Family: Only child

Gender: Girl, Age: 12, MBTI: ENFP (Campaigner), Blood Type: O, Family: Only child

Gender: Boy, Age: 12, MBTI: INTJ (Architect), Blood Type: A, Family: Unknown

Gender: Boy, Age: 12, MBTI: ESTP (Entrepreneur), Blood Type: A, Family: Only child

Gender: Female, Age: Approx. 2 million+ (Lived since the Stone Age), MBTI: ESTJ (Executive), Blood Type: High-strung Type A, Family: Unknown