* Siegfried from Creator/RichardWagner's ''Ring'' cycle is told that he has to learn fear and is embarassed that he appears too stupid to learn it.
-->'''AnnaRussell:''' "... he’s very young, and he’s very handsome, and he’s very strong, and he’s very brave, and he’s very stupid…. He’s a regular Little Abner type."
* The title character in Wagner's ''Parsifal'' (Percival) is a "pure fool" who can only be enlightened by understanding others' suffering.
* ''CyranoDeBergerac'': The ideal of a Gascon Cadet: You can do anything stupid as long as is heroic enough. As one cadet declares at Act IV Scene III:
--> '''The First Cadet:''' ... Gascons should ever be crack-brained...
--> Naught more dangerous than a rational Gascon.
* [[TheIngenue Hope]] [[ParodySue Cladwell]] and, to a lesser extent, [[TheHero Bobby Strong]] in ''{{Urinetown}}''. The problem is that they're hopelessly [[WideEyedIdealist naive]] in a [[SlidingScaleOfIdealismVsCynicism deeply cynical]] musical.
* In ''Theatre/PokemonLive'', Ash comes across as this since he is solely focused on obtaining the Diamond Badge, oblivious to Misty's feelings, and seemingly obsessed with Pokémon. However, in "I've Got A Secret", Ash sings about how he must move on from Pikachu's "departure" to follow his dream and become an adult. He gets over his idiocy by the end of the musical.
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