Pagliacci/YMMV


 * Complete Monster: Tonio; in some stagings of the opera, he hands Canio the knife at the climax, just to make sure everyone who's wronged him is destroyed.
 * Crowning Music of Awesome
 * Values Dissonance: To go with the above Trope, it's a little harder for a modern audience to sympathize with Canio and his need to avenge his honor against being cuckolded.