Disclamier: I do not own anything. Mario belongs to Nintendo, Gundam belongs to Sunrise, and the characters YoshiMan, YoshiGirl, and Birda belongs to YoshiMan.

Prologue: The World

It is the year 144 of the Galaxy Era calander system. Star World's overall population is overcrowed and all of the major kingdoms created space colonies to carry their large populations into space. Space is the final frontier for Star World's people to expand toward other places in space. It seems that it will go smoothly right, wrong! A group of space colonies from Side 6 separated themselves from other kingdoms. They are called the Koopa Kingdom, they wanted to rule Star World and the surrounding kingdoms by conquest by using large combat machines called mobile suits as raging war machines. They conquered side 2 and side 5, took control of the Waffle Kingdom and the Clockwork Kingdom. When victory is near for the Koopas, a speck of hope rests on two brothers who are rookies, Mario and Luigi and two mobile suit prototypes that are named the Gundams, to face the power hungry Koopas and their menacing war machines.

Technology

Space Colonies: Large orbiting habitats created by the Allied Kingdoms as the main solution to deal with over population issue. They located at Lagrangian points and many of them are grouped together to form a Side. Created as artistic representation of each Kingdom's culture, they all come in different forms and sides such as the mushroom shaped Side 3 Island M colonies. The Koopas used some of the captured colonies to drop them on various Kingdoms as the largest improvised ballistic weapons even built.

Mobile Suit: Large mecha originally created by the Koopas, these giant robots are more than a match for fighters, tanks, and even capital ships.

Mobile Suit

A close range mobile suit created as part of the secret Mobile Project at Side 3 to counter the Koopas' mobile suits. Mario pilots this mobile suit. It has strong weapons and armor than an average Koopbot.

AKRX-002 Luigi Gundam (Gundam Unit 2): Another Gundam made from the spare parts of the Mario Gundam. This one was created for medium-long range combat. Luigi pilots this mobile suit.

KMS-004 Koopbot The Koopa Kingdom's first combat mobile suit. These mobile suit are the key for their thrist for conquest. They can take out fighters, ground vehicles, and even capital ships.

Capital Ships

Virture Star: The new technologically advanced warship created to carry mobiles suits. Aside from holding deadly mobile suits in its hanger bay, it has weapons and technology developed by the Lumas that can outmatch the Koopas'.

Kooprone-class castle ship: Large mobile castles created for each member of the Koopa Royal family. A powerful flagship that can carry mobile suits and it can hold on it's own against a fleet. There 12 manufactured so far. The Kappa Claw is Prince Bowser Jr.'s own castle ship.

Characters

Mario: The main protagonist. A rookie Mushroom Kingdom pilot who has an Italian heritage. He pilots the Mario Gundam. He loves to go in hand-to-hand combat.

Luigi: Mario's younger twin brother. A former soldier and pilot of the Luigi Gundam. He prefers long range range combat and skilled marksman in combat.

Peach: A juinor lieutenant officer who became captain of a Ferrone-class Battleship, the Virtue Star, after the original captain was killed during the suprise attack at Side 3.

Daisy: An ensign who became deputy captain after the attack. She is Peach's closest friend.

Bowser Jr.: The fanfic's main antagonist, a 17 year old prince of the Koopa Kingdom, and a skilled ace pilot. The Allied Kingdoms dread him as the Black Prince.

YoshiMan: A yoshi civillan of Side 3, he is usually a fun-loving guy but has anger issues. An art student at a university.

YoshiGirl: YoshiMan's close friend, no one knows much about her but she is a literature student at the same university YoshiMan is taught at.

Birda: A Tomboyish Birdo from Side 3. She studies at the same university YoshiMan and YoshiGirl are taught at.