9 is the youngest of the group and represents the Scientist's humanity, good-heartedness, thoughtfulness, and sincerity. He is very intelligent, but he can make mistakes due to his curiosity. He seeks the truth in the history of his creation, and wishes to know the meaning of life. 9 normally doesn't fight, but when he does, he uses the knife he took from 2's staff
Jack Skellington Adventures Appearence[]
- Jack Skellington Meets 9 (First Appearence)
- Jack Skellington Goes to South Park: Bigger, Longer & Uncut
- Jack Skellington Adventures of Aladdin
- Jack Skellington Adventures of Princess and the Frog
- Jack Skellington Meets Master Shake & Bender: Goes to Washington DC)
- Jack Skellington Meets Mulan
- Jack Skellington Meets Tarzan
- Jack Skellington Meets Peter Pan