Zatch Bell and Sgt. Frog/ケロロ軍曹 Crossovers
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Sergeant Frog the Super Movie 6: Frog vs Mamodo by godzillafreak12 reviews
A strange, evil looking boy meets Fuyuki and brainwashes him to help him win the battle for Mamodo King. Now Serg., the platoon, Kiyo and Zatch, and the rest of the gang must stop this mamodo and Fuyuki before they destroy the world!
Rated: T - English - Humor/Adventure - Chapters: 8 - Words: 8,824 - Reviews: 6 - Favs: 4 - Follows: 3 - Updated: 5/30/2012 - Published: 1/15/2012 - Kiyo, Zatch, Fuyuki H., Keroro
Gash bell vs Keroro gunsou? by thatguy3331 reviews
a epic battle between Gash and Keroro! Who will win? Oneshot*
Rated: K+ - English - Humor/Supernatural - Chapters: 1 - Words: 2,191 - Reviews: 5 - Favs: 2 - Published: 6/28/2010 - Zatch, Keroro - Complete