Alright, let's do this one last time  
I.... Am Eobard Thawne   
From the 25th century (anyone else? oh)
That's right... "You've been dead to me for centuries."
You think you can stop me?...Drag me down?
Well, never forget...."I am always one step ahead."
I am a great adversary. But am I an equally good writer?..."Some would say I'm the reverse."
A Hufflepuff, Son of Hermes?...*laughs* That's Pathetic.
"You don't scare me."
"No one's coming to save you."
We can have long talks on the most random things (I'm from the 25th century, nothing fazes me)

To the Flash, *cracks neck*, if you're there.... "We're rivals, opposites, reverses of one another." 
And yet...
"You can't defeat me, Barry. And you never will."
I'm your worst nightmare. Your paradox. Your headache. It...Was....Me, Barry.

And to everyone else.... Welcome...To the Negative Speedforce