What's Opera, Arnold?

Summary

Helga and Arnold fall asleep and have their own "parody/dream" of the opera Carmen.

Guest stars

• Olivia Hack as Rhonda Wellington Lloyd (voice)
• Christopher Walberg as Stinky Peterson (voice)
• Ben Diskin as Eugene Horowitz (voice)
• Sam Gifaldi as Sid (voice)
• Adam Wylie as Curly Gammelthorpe (voice)
• Lacey Chabert as Ruth P. McDougal (voice)
• Lane Toran as Arnold (singing voice)
• Craig Bartlett as Brainy / Mr. Packenham (voice)