Keeper of the Bridge of Comprehension

The Keeper of the Bridge of Comprehension is a minor antagonist in the Phineas and Ferb episode, ''Exacaliferb. She is the fastasy counterpart of Esmeralda Poofenplotz.

History
The Keeper does not allow anyone to cross her bridge unless they answer her riddles, seemingly oblivious that the water under her bridge is shallow. She gives some complex instructions about her riddles such as categorizing them like a game show and that answers should be in the form of a haiku. She is only seen when a group of questers (Phineas, Ferbalot, Isabel, Bufavulous, and Baljeetolas) attempt to cross her bridge. The Keeper then gives the kids riddle to answer, but Baljeetola points out that the creek below the bridge isn't really shallow, so the kids decide to cross there instead, much to the Keeper's anger. However, when Baljeetolas gives in the correct answer to the Keeper's riddle, she decides to forget about it.