Rex was beat. Ever since he got beat by Weevil way back in that championship game, he has been in a huge slump. Sure, he manages to win enough against the no-name duelists, but he always loses to just about any professional that he plays against. After losing yet again, he went back to his apartment and found a package waiting for him. Along with the package was a note:

Rex Raptor,

I am a huge fan of yours! Ever since I first saw you, I've been your biggest fan! Take some of this to help you win! I took it from my daddy's office! It's supposed to make you big and strong!

Signed,
Tyranno Hassleberry, Age 8.

Sure enough, there was a weird vial in the box. He didn't know who the kid was, but he was curious. Along with the vial was a bunch of notes written in some super-scientific psychobabble that he couldn't understand. So he called the only brainiac he knew.

"Hello?"

"Hey Weevil, It's Rex"

"What do you want? If you want me to beat you in another duel, just give me a time and place! Hee Hee Heee!"

"No, it's nothing like that! I want you to come to my apartment. I wanna show you something."

There was a brief silence on the other line, "What's so important that you want to show it to me?"

"Just shut up and get over here! If you do, I'll let you have all the bugs you can find in my room!"

"Alright, it's a deal. I'll be right over!"

About ten minutes later, Weevil showed up in full bug-catching garb and, straddling a bug catching net twice as large as he was over his shoulder, he cocked an eyebrow and spoke up, "So what's this that you wanted to show me?"

Rex showed Weevil the vial, the letter, and the scientific data. After a few minutes, Weevil was stunned as he read the notes, even going so far as falling over in shock.

"What's the matter? What's wrong?"

"D-D-Do you realize what you've got here...!?"

"Noo... that's why I wanted you to come over, so you could tell me."

"This is... this is... Growth Serum! And not some lame prank. This stuff is the real deal!!"

"WOAH, REALLY!?"

"Yeah! This is one heck of a breakthrough!"

Rex was excited before leering at Weevil, thinking more cautiously, "Hey Weevil, How about I take that vial back now...?"

To Rex's surprise, Weevil calmly handed it back to Rex, "Sure thing."

"But why? We've both been short all our lives. You really want to throw something like this away?"

Weevil started laughing, "Are you kidding me? As long as I have this research data, I can replicate the formula easily! I may be evil at times, but you're the only guy I consider a friend. You can keep that and maybe, when I'm done, I can make more for both of us!"

Rex smiled at Weevil, "Thanks! So, umm... how do I use it? Do I have to do something special with it...?"

Weevil shakes his head, "No, you just drink it and you're all set!"

Rex nods and, popping the cork, he drinks the entire vial down. Weevil shrieks in fear, "You idiot! Don't drink that in here!"

Weevil grabs Rex and starts guiding him outside. As he did so, Rex started to grow. Five feet tall, Six feet tall, Seven feet tall. Soon, Weevil managed to get him out the door before Rex would have otherwise been unable to escape. Then Rex continued to grow further. Ten Feet. Twenty Feet. Thirty Feet. Fifty Feet. All the way to