The Spelling Bee is a character of the phantom tollbooth. He is a bee that spells any words in any language anywhere.
Milo Meets the spelling bee in Dictionopolis. In the book, the spelling bee appeared as a very large gray bee who is obsessed with spelling words. In the movie, he is yellow and is smaller and wears glasses. The spelling bee doesn't sting. However, he uses his nose as a sword if he's fighting the Humbug, who is said to always lie, who is his enemy.