Disclaimer: Don't own anything. Italics are flashbacks.
Pyro
St. John Allerdyce flicked his lighter open and closed as he stared at the Drake family portrait. He scowled, Bobby had it all: good grades, good looks (not that he really noticed that but come on he wouldn't have an ugly friend), two loving parents, a younger brother that looked up to him, and a hot girlfriend.
He was startled out of his thoughts as the front door opened and Bobby rushed passed him down the stairs. Faintly he heard Bobby stumble over an explanation to his family as to who the unknown man in their kitchen was.
They all congregated in the living room as Bobby sat his family down and began to tell them the truth, finally. John shook his head wondering how they believed all that bull about Bobby attending prep school in New York.
Then, to prove that he was indeed a mutant and not just telling tall tales Bobby reached over and at the lightest touch he caused his mother's tea to freeze solid in her tea cup. John remembered when he first showed his powers to his family.
"Stupid, insolent boy!" The scorched pan of chicken came flying at him from across the room. A young John ducked in the corner to avoid the searing hot pan, but was too slow to dodge the next pot that was thrown at him.
John curled up in the corner shaking as more kitchen ware rained down upon him. The tears were streaming steadily down his face as his father continued to berate him for ruining dinner. It was just John and his father after his mother left him with the drunkard, and John usually was in charge of the household duties even at the young age of twelve.
He dared to look up as the assault stopped, and he heard the scraping of one of the kitchen chairs being pulled out. Tired out his father had taken a seat and lit a cigarette.
John silently glared, if looks could kill! And then …. WOOSH!
The flame from the cigarette ignited and traveled up his father's arm, burning him. The man screamed and tried to put out the flames, but nothing he did seemed to work. Soon the rest of the house caught fire as John stayed curled up in a ball in the corner. However, the flames never came near him.
"Actually, they've discovered that males are the ones who carry the mutant gene and pass it on. So— it's his fault." John pointed at Mr. Drake, tuning back into the conversation. He never did like male figures of authority.
For some reason John was glad to see that Bobby's life was not perfect and his family wasn't so accepting of the fact that he was a mutant.
Then, suddenly the Wolverine was rushing them out the door, and out on the front lawn several police officers greeted them with guns drawn.
"Drop the knives and put your hands in the air. I said, drop the knives!" John looked down to see Wolverine had extended his adamantium claws.
"This is just a misunderstanding—" Wolverine began only to be rudely cut off mid-sentence.
"Put the knives DOWN!" the officer insisted gun steadily trained on the perceived threat.
"I can't! Look," Wolverine raised his hands to show the officer that his claws were physically part of him.
Instead the trigger happy officer fired, hitting Wolverine in the head who dropped like a bag of bricks in front of the teens.
John stared at his fellow mutant lying prone at his feet and the anger bubbled up inside of him. White noise filled his ears and he didn't even hear the command to get down on the ground.
He flicked his lighter open and stared at the flame, "You know all those dangerous mutants you hear about on the news? I'm the worst one." And he let loose with a jet of flame aimed at the officers.
Fire would protect him as it always had in the past. It protected him against his father, the foster parents that wouldn't accept him, those trying to take advantage of a young boy living on the streets, and everyone/everything else that he came against in life.
And that's why St. John Allerdyce was Pyro.