Pterri (voiced by John Paragon) is green pterodactyl and one of Pee-wee's closest friends.
His behavior is like that of a small child, once saying that he can't read yet. Pterri is afraid of thunderstorms and is very sensitive. His best friend is Globey.
In the HBO special, The Pee-wee Herman Show, he worked for Captain Carl as a sort of "talking parrot" element and was referred to as "Pterri-Dactyl" in the program.
In some shots of Pterri flying, instead of being portrayed as a puppet, he is animated using stop-motion.