Seven is one of the seven main characters in Seven Little Monsters. The youngest and tallest member of the family. Seven has the unique ability of being able to unscrew his head. Despite his frightening appearance, he is the most gentle and timid monster. He also loves cheese, and he always asks for the definition of a word he has never heard before and speaks in a voice similar to English actor Boris Karloff, who died in 1969. Also, he's afraid of bugs.