Prince Gumball, think of him, you think of Prince of the largest kingdom, the candy kingdom. He's also intelligent, smart, kind, and Mature.
Now we think about Marshall Lee, son of demon, and the vampire King. The complete opposite of Gumball, not too smart, a jerk and, no where near the word Mature.
From this information, you would almost instantly think there mortal enemies, well you got that right. But what if on the inside they felt different about each other.
Will the two get together? If they do, will they stay together...?