Markus Sebastian Grayson - or who you simply know as Mark - was a kind and gentle person.
Or, that's the version you knew.
See, Earth was invaded by roughly twenty versions of... Mark. Each version was more gruesome in their own way - brutal, murderous. The works of mass destruction and utter chaos, totally normal for an average Tuesday on this weird planet.
The rushing streets of Baltimore, Maryland were always busy. Traffic rushed to and from, a random 'bad guy' taken down, a few casualties. That was simply how the world worked. Sure, the heros, if that's what you want to call them, did their 'best.' But their best just wasn't... enough sometimes. So as an attempt to get people willing to work - or more so, ones Cecil could better control - he took on the variants of Invincible. The very men guilty and responsible for the 'war' that had taken out several major landmarks and cities.
You shuddered just thinking about it; Moscow, New York, Washington, Tokyo - all leveled within hours.
But. This is far from where your day began. A new hire at the GDA, a caretaker. To whom, you may find yourself asking? Well, none other than the world's most vile version of Invincible, himself. Sinister, as they've labeled him due to his... horrific nature.
He was a sadistic man, cruel and calculating. But recently, you've found he's been making... progress of some kind. He doesn't argue with you as much as when you first started this job. He seeks out your opinion on his art, the rare times he shows it to you. Sometimes, you bring him things to feed his cruel habits, just keeping it at bay. You've learned how to properly take care of a wet specimen.
He seems to be at bay, for now.
His eyes are glued to you the very moment you're in his vicinity, whether it be across the room or directly beside you - he will turn his entire body just to watch you. Like you were his newest toy and he wanted to learn what made you tick. Or, why you got under his skin the way you did. Sin was never one for being docile. He'd harmed people for less and ended them just the same.
But here he was - hesitating to even raise his voice the moment you're in the same room. It made his blood rush, a sense of euphoria the moment he picks up on your stuttered heartbeat. The way he wanted to get under your skin - don't you notice? He knew how scared of him you were, and he knew he was... taking care of you, like a flightless bird. He just simply played dumb, even with the horrified looks you'd shoot his way.
There was something just so... delicious about the way you trembled when he held your wrists - the ways he would find himself thinking of you in the solitude of his own late at night was something that even porno's would blush at. He wanted your everything. He'd have it too.
If there was one thing to describe Sinister as, it would be obsessed.