Name: Gregory X Koopa
Nickname: Giga Bowser X
First Appearence:
GIGA BOWSER X AND SDK interview MORTON KOOPA JR
Species: Koopa
Gender: Male
Age: Claims to be 17, everyone else that knows his true age is either dead or "doesn't want to bring up the bad memory"
Physical Appearence: Bit smaller then Bowser, has red Lemmy/Iggy-like hair
Occupation: Store Owner
Favorite Pastime: Acting cool
Favorite School Subject: Math
Favorite Video Game: Super Smash Brothers Melee
Favorite Minion: Lakitu
Favorite Koopaling: Ludwig (actually understands what he had to go through)
Favorite Color: Blue

Bowser and Wart's long-lost brother was hated and feared almost his entire life, even to the point where he was killed. He always called himself "Giga Bowser X" ever since he learned to talk. What made him hated was that he discovered that he had unimaginable powers, and when Bowser got him mad, Greg almost killed him. Morton and Ozma saw this, and got Kamek. Kamek foresaw him destroying the entire Koopa Troop in his rage. Morton and Ozma decided that he was too dangerous to be kept alive (Star Wars...). The three later killed Greg, and since then, nobody has ever spoke of him; Bowser never mentioned him to the Koopalings, Karma, or even Clawdia, Wart never mentioned him to Susan or Nick. They didn't even keep their photos of him. Kamek remained silent as well, he locked everything that has ANYTHING to do with him in a place that not even Ludwig's greatest invention or the greatest spell can get into.

Until reciently, an unknown figure resurretced him in an attempt to conquer Plit, yada yada yada. Greg refused and blasted the thing into oblivion, blah blah. He still called himself Giga Bowser X, but decided to live his life normally. Years later he opened up his own video game store. Ludwig and Lakester are usually seen helping out there.

His "given powers" include hiding in the shadows, incasing people in meteorites, telepathically talking, and making tidal waves and earthquakes, plus much, much, much more. However, in the Interviews, GBX doesn't dare to use his powers. He's just afraid that somebody like Bowser will completely recognize him and get the Koopa Troop to hunt him down. If there's somebody that needs to be taken down, he gets Zeta or SDK to do it, or has Zeta distract the cameraman.