Exposition Al is a character in Plants vs. Zombies: Battle for Neighborville who resembles a Cactus wearing the "Succulent Braids" Hat and "Prickle-A-Clava" Neck Piece. As her name hints to, she likes to narrate events that occur, mainly about plants and their many good deeds.
She is found in the Rocky Flats in Mount Steep. She gives the player a quest where they have to follow her treasure map to find the buried Instructional Podcast which will be used to master the Harmonica.
Her name is a pun on the term "expositional," which is the act of expounding, setting forth, or explaining.
Find The Buried Instructional Podcast
Exposition Al's treasure map leads to the Instructional Podcast on Harmonicas! Be careful! It also leads to adventure AND a really good story. That sounds fun! Hm, maybe DON'T be careful.