S2 E1 • Mast Task

Peter tries out a new time-space machine and ends up in old west Arizona. Peter jumps out of the balloon and lands on and disables the village's avenger, Senor El Zingo. Peter takes the place of the avenger to face the villain Don Jose el Tic-tac-taco. The villain is done in by Peter's hippo hurricane holler. Peter sends El Zingo, with nothing to do now, to Don Jose as well.

Première diffusion : 11 septembre 1965

S2 E2 • Pre-Hysterical Pete

So-So spins the time-space machine and sends the balloon to prehistoric times. Peter removes a thorn from a dinosaur's foot. Now they can't rid themselves of the grateful dinosaur but are elated when the dinosaur saves Peter from an attacking caveman. The dinosaur, imitating Peter's hippo hurricane holler, accidentally sucks the balloon inside his belly. Peter and So-So, on the balloon still inside the dinosaur, float off.

Première diffusion : 18 septembre 1965

S2 E3 • Trite Flite

Peter and So-So escape an attacking fish using the time-space machine. They end up under fire by World War I ace, Baron von Rip-em-up. The troops on the ground think Peter was sent by headquarters to fight the Baron. The two dogfight in biplanes. The Baron's apparent advantage in the battle is lost when Peter uses his hippo hurricane holler.

Première diffusion : 25 septembre 1965

S2 E4 • Marriage Peter Potamus Style

Peter gets out of a bad storm using the time-space machine and ends up in Verona, Italy. He falls out of the balloon and disables Romeo. Romeo enlists Peter's help to go get Juliet but Juliet's father is trying to prevent it. Juliet's father is sent away with Peter's hippo hurricane holler. Romeo and Juliet are married and go off on their honeymoon together using Peter's balloon.

Première diffusion : 2 octobre 1965

S2 E5 • Calaboose Caboose

The time-space machine takes Peter and So-So to the old West. Peter lands in a train and is sworn in as a marshal before the real marshal jumps off the train. Peter battles Jessie Jimmy, who is trying to rob the train. Jessie is finally defeated with Peter's hippo hurricane holler, which blows Jessie right to the State Prison.

Première diffusion : 9 octobre 1965

S2 E6 • Eager Ogre

Merlin, the magician, is enlisted by King Arthur to find someone to battle an ogre. The time-space machine takes Peter and So-So to Merlin at that time. Peter reluctantly fights the fire-breathing ogre and defeats him using his hippo hurricane holler.

Première diffusion : 16 octobre 1965

S2 E7 • The Reform of Plankenstein

Caught in the middle of a hillbilly feud, Peter and So-So escape using the time-space machine. It takes them to a village being attacked by a monster made by mad scientist Plankenstein. Peter defeats the monster with his hippo hurricane holler. Plankenstein uses the monster parts to build a merry-go-round for the villagers.

Première diffusion : 23 octobre 1965