The Saxophone is a future teacher who briefly appeared in Don't Hug Me I'm Scared 6 when Red Guy was experimenting with a machine. He was supposed to teach the puppets about "buying a canoe".
Alternatively - going by the fact that he looks like a saxophone - he may have been a music teacher, and been trying to teach Yellow Guy the blues, scat singing, or jazz.
He appears a yellow saxophone, with slender yellow arms, buttons, a small yellow nose, and sunglasses. He also wears white gloves.
"Boo bop-a-doo bop! I teach you how to buy a canOOOOOOEEE!"
- He can levitate.
- His singing voice is very off-key.
- It is unknown what was meant by the saxophone's promise to "teach you how to buy a canoe." Taken literally, this quote is nonsensical, and is most likely written this way to fit with the theme of poor teaching present in Don't Hug Me I'm Scared 6.