The Sacrifice

As soon as we arrive to the stadium, trouble arose. As you should've known from both the prologue and the story so far, there is a war going on between the hacks, and the non-hacks. As you can guess, running right into a Pokemon Stadium 2, whilst it is filled with non-hacks, and you being a hack is not such a good idea. In seconds, we were caught by a small, yellow, mouse-like creature; a small, round, ball of fluff, a large, orange dragon, a medium, plant-dinosaur, a little turtle, and Captain Falcon.
"What are you doing here? What's your mission?" asked Captain Falcon.
Before I could speak up, Elfrid responded. "We come to warn you. Giga Bowser has created a group of assassin clones to eliminate you, Sonic, and Princess Peach. They have already accomplished Sonic."
"You lie. This is obviously a trap, and your little friends will be coming any second." spouted back the Cap'.
"While they do indeed approach, not here. They are under the belief that you are in the Big Blue. I do not lie. We held a mutiny on Giga Bowser, and are now as much of a target as you." Elfrid stated, attempting his best to convince Captain Falcon that he is not lying.
"Here's a proposition: if you are indeed wanted by Giga Bowser, we'll use you both as bait. When this group comes, we rush them. Odds are that you'll die." Captain Falcon said.
"You know what? Screw you, you insufferable baboon! Here we are, trying to warn you and save your sorry life, and you tie us up and treat us like dirt? He destroyed one of Giga Bowser's friggin helicopters! I almost died for your behind, but NO, just screw us over, huh? Well, SCREW YOU, you-" I was saying, before a helicopter flew over us and deposited a shadowy figure. Wait, what? I thought, This being looks just like me. When the plant-Dino charged at the shape, a black aura developed around it, and it transformed into a black ball. It then crashed into the plant-dino, AKA, Ivysaur, was sent flying back. It then aimed for the Pikachu, but lightning struck from above, blasting the evil Shadow back. It got up, and charged at Jigglypuff. As it charged, it shouted "I am Shadow Beta!"
Just then, a loud, shrill cry was heard. Pikachu had taken the hit. Pikachu fell, unconscious. As Beta wiped the blood off his hands, I charged. He dodged, and gave me a side kick. When Elfrid tried, Beta jumped and smashed into Elfrid, sending him tumbling back. When the dragon threw a rock at him, he punched it, shattering it. When the dinosaur threw leaves, he jumped over them. When the turtle charged at Beta with Waterfall, Beta grabbed its head with one hand, and flung it as far as possible.
Just then, a loud, "Falcon PUNCH!" was heard, and Beta was sent flying. Beta fell right into Elfrid and was promptly tied up. "Okay, where's your crew?" Captain Falcon inquired roughly.
"Right HERE!" shouted Beta, before the ground began shaking.