Thought it would a better idea (Zandra)

Josh eyed Skye as she grunted and fell to the floor. Was she dead? Had the brunette chick killed her? Oh man, he didn't want to be a part of this anymore, but he owed Aston so bad for sticking up for him in school.
"I'm not just the muscle," he told the girl, clearly displeased at this assessment. She was just the same as Skye and Aston and Lila. Everyone just saw the big, stupid gorilla. The scrawny kid's knee hit him straight in the crotch and he grimaced, releasing the fist to recover.
"That was low, man," he complained, one hand going to his damaged goods. He staggered back, then regained his balanced and lunged for the guy.

"Screw it," Aston growled, peering out of the door window. Skye had been a load of crap - he never should have brought her along, she was too full of herself. Josh was such a freaking pussy. He glanced at Lawrence, who had his eyes closed. A tiny bug was buzzing around his head.
"Make sure nothing happens to her," Aston told him. A minute nod was his response, though Lawrence looked completely asleep. Lila was silent, though her arms crackled with the energy she had absorbed. It wouldn't be long now.

He cracked his knuckles, and then placed his hands together.
BOOM!
Fire exploded from between his palms, blowing the door clean off it's hinges. Aston entered the carriage, an inferno flickering behind his blue eyes. His skin lit up with a layer of flame, from the tips of his spiky hair to his shoes.
"Come on, Josh, let's finish these guys," he said, nudging Skye's body to one side with his toe. The heat emanating from it had her shirt smoldering, but he didn't care. He just needed space.

Aston looked satisfied at Josh's attack on the little guy. At least he was doing what he was told - that's more than could be said for Lawrence.
"You wanna one on one me, sweet-cheeks?" Josh asked, dancing forwards, a leer on his face that reflected in his eyes. It looked like she had some power of her own - she was able to hold Josh back, though it didn't look as though he was making much of an effort to stop her. The other dude was in a fetal position. Good. That was him out of the game.

Josh stared at Zandra. She was really pushing for him to not fight them, to stop being a coward. He wasn't a coward. He'd made his life in this gang out of not being a coward. These two had just been in the wrong place at the wrong time.
"Come on! Smack her, Josh!"
He heard Aston calling from beyond. He knew that if he hit her, that would be it for him. He had morals. His mama had taught him well.
"At least throw her to me! Let's play some catch!"
Had Aston always been such a psycho? Had it been like this before Aston's powers had surfaced, before he'd gotten his strange obsession with the Brotherhood?
He couldn't remember.
"Be a man about it, Josh, give her what's coming to her!"
That last goad was enough. He gently pushed Zandra back, pushed her away from him.

"This has gone far enough, Aston. I'm not gonna hurt her for you. I'm done," he mumbled into his chest. Regardless of whether or not this was the right thing to do, it was hard to stand up against his best friend.
Aston stopped in shock.
"Are you freaking serious? You've come this far, man, you can't back out now."
"I'm not killing someone for you. You wanna do that, you... you can do it yourself," his voice became stronger.

Aston paused for a moment, and then shrugged.
"Yeah, well. What the hell ever. I can wreck you too," he shrugged. He clapped his hands again, sending a peal of fire towards Josh and the two strangers. As soon as it hit Josh on the arm, it exploded, tiny flames being sent out in different directions like a firework.
Josh flinched, gasping at the welt on his arm, clenching his fist against the pain, hard enough that the nails bit into his palms and drew blood.