Air date: 2019-02-08

Runtime: 24 min

With Mr. Krupp gone and two terrible Melvins in charge, Harold and George fight back by hypnotizing their gym teacher, Mr. Meaner.

Air date: 2019-02-08

Runtime: 24 min

The boys recruit kids to join the M.I.S.F.A.R.T.S. -- the Mega Incredible Search Force Adventure Rescue Team Squad -- and bring Mr. Krupp back to School.

Air date: 2019-02-08

Runtime: 24 min

After injecting all the teachers with bee DNA, the Melvins run the new "hive mind" of the school -- until Ms. Ribble accidentally becomes queen bee.

Air date: 2019-02-08

Runtime: 24 min

George and Harold train a rat for extra credit. But when their subject escapes into the sewers, he's doused with toxic waste and becomes ... Poopacabra!

Air date: 2019-02-08

Runtime: 24 min

Who knew a thawed-out dinosaur could read comics and pull pranks? Well, this one does -- and he's one of Harold and George's biggest fans.

Air date: 2019-02-08

Runtime: 24 min

Captain Underpants becomes a wanted man when a criminal who looks just like him starts robbing banks. Can George and Harold help clear his name?

Air date: 2019-02-08

Runtime: 24 min

The boys use Melvin's new animal hybrid invention to make a creature that's a cross between a butt and a fly. But these butt-erflies are real monsters!

Air date: 2019-02-08

Runtime: 24 min

After George and Harold work with Erica to create a new comic hero, she springs off the page -- and plunges into real-life crime fighting.

Air date: 2019-02-08

Runtime: 24 min

The boys transfer to a bizarro version of Jerome Horwitz Elementary, where the teachers are nice, the kids are good ... and fun is nowhere to be found.

Air date: 2019-02-08

Runtime: 24 min

George and Harold trick Melvin into turning their bus into a time machine so they can reroute their field trip and see what ancient Rome was really like.

Air date: 2019-02-08

Runtime: 24 min

The Melvins' latest invention sends the boys' Dump Day "trash-alanche" into another dimension -- and inadvertently summons a monster.

Air date: 2019-02-08

Runtime: 24 min

A final exam sends George and Harold to the Doom Dome, where they must battle Melvin -- who's been injected with powerful nanobots -- in order to pass.

Air date: 2019-02-08

Runtime: 24 min

Summer camp is on the line as Melvin's nanobots find a new host in Captain Underpants, forcing the boys to shrink down and go inside his brain.