The Harmful Horrors of the Harrowing Hiveschool is the third season 2 episode of The Epic Tales of Captain Underpants.
The Melvin Sneedlies rehire Mr. Krupp, but there's a catch... He's been demoted to vice principal! Their hive mind plan with Bee DNA goes downhill when Ms. Ribble's overdose makes her queen bee and the resulting honey turns the others (bar George and Harold) into drone slaves. Captain Underpants to the rescue!
- This is the first episode Captain Underpants doesn't turn back into Mr. Krupp at the end, because he's been getting stung by the bees so much that he got all puffy, as he mentioned.
- Mr. Krupp snapped his fingers in his interview with Melvin and Melvinborg, though he didn't turn into Captain Underpants by accident, it happened again in The Polarizing Plight of the Pitiless Poopetrators, however, he finally turned into Captain Underpants by accident in Captain Underpants and the Heartbreaking Havoc of the Haunting Hack-A-Ween.
- It might be possible that he can't hear the snap when he's talking.
- This is the first full episode Other Sophie is absent since The Frantic Fury of the Fearsome Furculees because she's still stranded in the jungle with the Croc-O-Bats, she's mentioned by Jessica mistaking her with the tree sloth throughout 5 episodes until she comes back in The Bizarre Blitzkrieg of the Bothersome Butt-erflies.
- Mr. Krupp gets kicked out of his own office due to Melvinborg taking over. He's not getting his office back until The Taxing Trauma of the Treacherous Tattle Trials Part 2 when Melvin changes the future, causing Melvinborg to disappear.