"Let's go to the park." Nick said, and with that, both boys vanished instantly, and were teleported immediately to the nearby park
"Whoa!" replied Percy.
"Percy, I told you, I'm God."
"R-Right. Just gonna take time to get used to that is all."
The two looked around. Nick of course, being God, knew everything that was going on at every point on Earth all at once, but regardless, he still asked,
"Hey, anybody you see that you think deserves some help, Percy?"
Percy stood there a few moments, crossing his far more muscular arms across an equally more muscular chest, pondering carefully. Finally he pointed at a group of six people, three older teenagers and three pre-teen boys. The three teenagers were Chad, Ian, and Greg, while the three pre-teen boys were Ryan, Caleb, and Nathan. All three teens were harassing and bullying the three pre-teens, who tried their best to fight back how they could, but they were really quite powerless on the whole, which Nick knew he would have to change so that this didn't continue on any longer.
The first change to hit from Nick's power, was that all three teens suddenly felt dizzy and woozy, as any muscles they had practically melted off of them, while all three boys starting growing. It wasn't just a little bit of muscle either, but a LOT. They were practically Hulking out, packing on muscles that equaled Nick and Percy's muscles put together each! It was really quite the sight to behold.
All three were absolute powerhouses now. They flexed up huge biceps, each one as big as their heads, with deep tricep bellies, thick forearms, and cannonball delts. Their chests and abs were less muscle and more like diamond-hard armor-plating, and their back and lats were almost 3 feet wide when flexed. Their legs were absolutely mighty, with huge thighs and calves letting them run and jump effortlessly and as much as they wanted, and so much more.
Now each teenage boy also got a special punishment from God. For Greg, he had been calling Ryan a 'shrimp', and thus for his punishment, he found himself shrinking to six inches tall, now 100% at the mercy of his also now super-buffed up younger brother. Chad had been making fun of Nathan's weight, so all of that excess fat that had been on Nathan's body now appeared on Chad's instead, plus, any excess weight Nathan might gain in the future, would always go to Chad from now on. Ian was the last, who had been calling Caleb a 'brat', so now he finds himself shrinking like Greg, but also becoming younger, until he was 2 years younger than Caleb.
For those six along with Nick and Percy, their memories and personalities had not changed, but for the rest of reality, this had always been the case. The three boys had always been huge and super-strong, and the three others had always been a child, or fat, or shrunk to a few inches tall. Meaning nobody would question anything that had transpired.
So for his next trick, Nick...