Season 1
Magical PiPiPi Power
A boy named Hat falls into the underworld realm and discovers the evil Lord Jaku, a demon who aspires to become the new king of the underworld, replacing the current king, Aleph. Hat is locked-up and meets with the prince of the underworld, a fellow named Hotdog. With a common enemy in Jaku, the two join forces and escape from their imprisonment. They are quickly re-captured, but are then rescued by an old man named Grandpa Tau. After escaping, Tau takes them to a magical shrine, where Hat discovers that he is part of a long lineage of heroes known as "Magical Hat", and he is the next in line to don the hero's hat, adopting its powers to fight evil, but is he up to the task, and can he use these powers to put an end to Jaku's sinister plans?
It's MudZinger~dogu!
The Luster of a Mysterious Island!
Kowaru's Pure Love Story
Fight! Restoration of the Golden Domain
Pe! Pe! Petamos' Grand Gathering!
An Intense Racing Story!
Something is Off! Pink Bugs!
The Verdant Island of Gluttonous Sumo Wrestlers!
Hat Just Goes and Dies
Papa's Uneggspected Love
Hat's Great Transformation! It's a Girl!
See You in the Nightmare
My Husband is an Alien!
A Story of Good Friends
The Magnificent Gyotaro
Cooked for Three Minutes! Hard-Boiled Hat!
Who's the Sloth?
Wait, Who am I Again?
Clash! The Grand Treasure Hunt!
Kowaru's Road to Success
Go Outie and See the World!
Shine on! Path of a Hero!
All-time best! Spring Bloopers Contest!
My Beloved Egg!
I Thought He Died? B-B-Back From the Dead!
The Howl of the Sun Blade!
Dad Back in Action!
A Sparkling Silver Egg!
Feeble Hat in Fairytale Land!
Ghosts Are Welcome!
Find Grandpa Tau's Hidden Treasure!
Peace Talks in the Underworld Are Underway?!