Sgt. Frog: Season 4
Season 4 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Sgt. Frog Season 3.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 4 Progress Shield
Keroro: Fuse, Keroro Robot / Keroro: Invasion! Cherry Blossom Forefront
Apr 14, 2007 · 25 min
Keroro: Grand Invasion, For A Limited Time Only / Momoka, A Tanabata Exclusive
Jul 7, 2007 · 25 min
Urere: King of Trains / Giroro: The Beautiful Girl and the Liquid Keronian
Jul 14, 2007 · 25 min
Fuyuki & Keroro: Unveil the Seven Mysteries / Pururu & Chiruyo: Secret Friends
Jul 21, 2007 · 25 min
Keroro: He'll Comb Straight Out, Singing With an Afro / Dororo's Mysterious Mountain
Aug 18, 2007 · 25 min
Keroro: Dive Into the Plastic Pool / Fuyuki & Natsumi: A New Morning Has Come
Aug 25, 2007 · 25 min
Keroro Stands For Election / Natsumi & Giroro: The Two Who Couldn't Return
Sep 22, 2007 · 25 min
Mushishi: Where the Bugs Are / Momoka: The Three-Legged Race Competition
Oct 6, 2007 · 25 min
Keroro: That Guy and the Lullaby Legend / Keroro: Mighty Plastic Model Battle
Dec 15, 2007 · 25 min
Keroro: Prevent Christmas / Keroro Platoon: Cake is a Man's Battleground
Dec 22, 2007 · 25 min
Keroro: New Year's Shrine Visit Without Honor and Humanity / Keroro: Sechira Versus Zonira
Jan 5, 2008 · 25 min
Natsumi: Take Me Out to the Snowland / Keroro: Hot Springs are All About the Table-Tennis
Jan 19, 2008 · 25 min
Chibi-Kero: Chibi-Chibi Great Adventure / Natsumi & Momoka: No Giri Chocolate
Feb 9, 2008 · 25 min