Captain Underpants and the Monstrous Mayhem of the Massive Melviathan (S03E05)

S03E01 Captain Underpants and the Worrisome Wedge of the Water Warmongers S03E02 Captain Underpants and the Angry Abnormal Atrocities of the Astute Animal Aggressors S03E03 Captain Underpants and the Abysmal Altercation of the Abominable Altitooth S03E04 Captain Underpants and the Bizarre Bout of the Beastly Barfilisk S03E05 Captain Underpants and the Monstrous Mayhem of the Massive Melviathan S03E06 Captain Underpants and the Savage Spite of the Slimy Salamangler S03E07 Captain Underpants and the Cunning Combat of the Covert Camoflush S03E08 Captain Underpants and the Bad Beat of the Blah Borelock S03E09 Captain Underpants and the Ghastly Danger of the Ghost Dentist S03E10 Captain Underpants and the Confounding Concoction of the Crooked Combotato S03E11 Captain Underpants and the Ludicrous Lunacy of the Loopy Laserlightmare S03E12 Captain Underpants and the Shocking Showdown of the Staggering Sugamechanger S03E13 Captain Underpants and the Polarizing Plight of the Pitiless Poopetrators