Draco Malfoy was a coward. Keyword was. Draco was the type to only stir up trouble when he knew there would be no serious consequences, the type to hide behind his father's money and power, the type that He would naturally take joy in torturing, in stripping of their so-called false power, and making them beg in terror, in fear, for mercy. And of course, mercy was something that He knew nothing about.
Draco Malfoy made Him sick. Not from his existence but because He was…is…Draco Malfoy. From a young age he's been in the back of Draco's mind, influencing some of his actions, driving him to do certain things, and while his success rate was minimal, in time he grew stronger, and his voice grew louder. By the age of 9, he had completely taken over, and that is when the fun began.
Draco was a smart, talented boy, an artsy type of child who looked up to his Father and tried his hardest to embody the Malfoy way. His father was proud of the boy he was and of the man he was projected to be. And then He came along.
He, the self-proclaimed Demon of Terror, Lover of Fear, had taken control of the psyche and of the body of one Draco Malfoy, and there was a lot of work to be done. It is…ironic in a way that the aptly named Thriller (by his good friend and brother) had died in a sea of fire, only to be reborn inside of a dragon. When Thriller was engulfed in the painful and soul-wrecking fire, he didn't have much hope for his status in the afterlife. To be honest, he expected…more fire, fire and brimstone to be exact, and to be cast in the lake of fire. He was no Christian, nor was he over religious, but as a self-proclaimed Demon, there was little else waiting for him, outside of the atheist interpretation of nothingness.
When he was reborn anew, and reincarnated into another world, he was floored, flabbergasted, confused, baffled, etc. What had he done to deserve that? Had his short, yet meaningful stint in the Killer Bee Gang, wielding his forces of Evil to do good by the people meant that much? Or was he simply lucky? Or does fate and death not care about one's life before they take the trip on the River Styx? Regardless of why, he had another chance at life, and he would do the opposite of looking a Gift Horse in the mouth, he would cherish it.
And cherish it, he did. Even as he watched, disgusted, inside of young Draco's psyche, he still did all he could to help the young boy. Magic…is something he didn't think existed in his world, and something he was left in awe of when he first experienced it in this world. But being behind the veil of a Malfoy allowed him to be integrated quickly into the realm of magic, learning as Draco did, and soon putting his genius to work.
See Thriller is more of an esoteric sort of genius, figuring out complex solutions to impossible tasks, sometimes simply because he liked the aesthetic it brought, the fear it wrought, and the effect it would have on others. He's no Crane, making gadgets and analyzing every second of every day and every twitch in every muscle, but he did manage to create something that even Crane struggled to master: his fighting style. For someone that mastered…pretty much everything in an hour or less and then streamlined it to others to learn in only double the time, having someone of that intellect take over six hours just to fail at taming his style, to have to admit that his style is too difficult to learn for anyone besides a true genius, it gave…it gives Thriller validation.
Using that genius, Thriller was able to coach Draco on the basics of magic, teaching him…or rather discovering together how to perform wandless magic, how to, in theory, manipulate magic well enough to create new spells, and of course skills from his old life: how to fight with his hands, how to wield a sword, how to manipulate wires, and how to inspire fear, a specialty of his, and a necessity if they were to coexist. But Draco, smart as he is, had slower progress than Thriller would've liked. By the time he was nine, when Thriller took over, he had learned how to do wandless magic seamlessly and was…OK at fighting, but he had created no new spells, and had gotten almost nowhere with his wires. As such, Thriller had a lot of work to do, as in only a year or two he'd be off to school, off to Hogwarts. And he had…plans for when that time came. He never achieved his goal in his last life, to be the most feared man on the planet. But this time in this life and in this world, well he can only grin his trademarked grin (without the sharp teeth unfortunately) at the possibilities that await him.