The dark red figure that is as tall as a teenage boy murmurs.

"Imposter, you're not strong enough to resist any further."

Its voice is low, but the sound seeps into his lungs, chilling him from the inside.
He has to force himself to speak.

"*Pant Pant* A mere human dares resist the One. How foolish!"

His bravado can't hide the slight tremble in his voice.

"A human? Yes, I used to be a human.
But not anymore. I've long crossed human limits with the energy I've absorbed from creatures like you."

Then the dark red fog around him clears, revealing a ghastly pale visage of a young man, two sharp cuspids visible between bloody red lips.
Sharp cuspids!

"Eek! You're that vampire I’ve heard about!
You monster! You drain life out of everyone you see! You can kill me,
but you're nothing compared to him!"

He shouts the words that he feared to say, and the scream that follows is no different to him from the squealing of a dying pig. 

"A monster. Yes, I guess I'm a monster now.
But I prefer Bloodseeker."

The dark red figure continues to whispers to himself.

"But this is so entertaining.
I feel foolish for being afraid of crossing that line."