Invader Jam (english)

An ancient race of beings known as the Arbiters has begun creating strange portals that connect three Earth cities: Tokyo, Bootsville, and Doomsville
What these cities have in common is something their residents have yet to discover: each one harbors a dangerous alien invasion force, and they are about to become the stage for an all-out battle over the fate of the planet
Now, Invader Zim, Mr. Kat, and the Keroro Platoon have been gathered to face off for the right to conquer the planet in an ancient competition known as the Invader Jam
But the invaders won't be the only ones entering the fray-the humans aren't going to sit idly by either
Of course, Dib, Coop, and Fuyuki must find a way to stop the competition before Earth ends up occupied by the victors
Invader Zim is the property of Jhonen Vasquez / Nickelodeon
• Kid vs. Kat is the property of Rob Boutilier / Disney
• Sgt. Frog (Sergeant Keroro) is the property of Mine Yoshizaki / Kadokawa Shoten
• This fanfic is written by me (Blaspher)