Per 
At ■■:■■ on ■■/■■/■■ a mysterious entity materializes in XXXX's containment unit. Entity appears to be a caucasian male with long blonde hair, and is displaying signs of distress. X is not visibly shocked by the sudden intrusion.
X: What are you doing here friend? I doubt my hosts will appreciate you dropping in like this.
N: There's something…out there.
X: What do you mean? Where?
N: Everywhere…can't escape him…can't hide.
X: You can't escape? Who could be so powerful? Who are you talking about? There are lots of things that are called omnipotent…
N: He's…the biggest…he's far above me…and below…even within…throughout. It burns…
X: He's hurting you? Is he after you?
N: He isn't…after anything. He's just everywhere…nowhere to hide…even nowhere…isn't safe.
X: So why is he hurting you?
N: Not intentional…he's just there…and here. In…my head…not my head…if it's his too…
X: Even you can't force him out? What sort of monster…
N: No monster…he isn't…any thing…it burns…have to stop it…him…I must kill…eat.
X: Eat?
N reaches out and grabs X's wrist and X expresses shock/awe.
N: Now you see? Feel it?
X: It's…unbelieveable. How is this creature even possible? Something without a bottom or top. He goes on forever…beyond compare.
N: He has to be stopped.
X: But he isn't actually doing anything, right?
N: He has…to die…him…or me.
X: You can't be serious, I know you feel tormented but you can't possibly plan to go against this person.
N: I do.
X: But you can't win.
N: I might win…maybe…I must. Doesn't matter anyway…I'm losing myself regardless. My mind slips away…sometimes I am myself but rarely and briefly. Then I dive further into my power…an itch I cannot scratch away…his power could…sate me.
X: His is not a power to seek…but I can't stop you. Basically no one could I suppose. I wish you good luck my friend.
N: Luck…thank you…friend.
N vanishes
XXXX leans back in his chair and sighs heavily. He then stands up slowly, lifts his chair and shakes it once. The chair vanishes, and in its place XXXX holds a massive warhammer. He then proceeds to smash his containment unit's door with a single vigorous swing and then leaves the facility by its front door, a wake of unconscious foundation security personnel behind him.
A minor disturbance in SCP-3812's form is noted by personnel, it is described as appearing to "bristle with anticipation" and a few moments later entity N appears standing on the water's surface a short distance from 3812. 3812 swells momentarily as if in greeting.
N extends a hand and several thunderclaps send shockwaves through the water's surface as lightning arcs between the two, simply vanishing into 3812.
3812 responds; exasperated, "Can't we get along? I have no reason to fight you."
N's answer comes in the form of a massive gravitational and magnetic spike with 3812 at its epicenter, water is thrown in every direction, in some places being pulled up or sideways. Seeing that 3812 is unfazed and unmoving N proceeds by creating a 30m sphere of emptiness around the two, measurement and surveillance devices within this sphere of influence cease transmissions and appear to vanish completely. Again 3812 remains in place, unharmed.
N displays great annoyance at this and suddenly teleports directly in front of 3812 and plunges both arms into the ethereal writhing mass. This elicits a ripple across 3812's form and a surprised "Hey!" Streaks of N's flesh immediately erupt into bright blue flames. His hands appear to be slowly vibrated apart, blending into the form of 3812.
N maintains his composure briefly but suddenly begins screaming, his eyes beaming with intense multicolored light. These beams split the sky as he throws his head back in a helpless, agonized roar. Every measuring device in the vicinity shows energy levels beyond their capacity, nearby hume levels skyrocket and then plummet to apparently nothing only to spike past the measurable threshold yet again. The water beneath the two forms a deep whirlpool which collapses on itself, causing a torrent to leap up at them. This mass of water contorts around them forming a massive cyclone on the water's surface which then suddenly falls. All the while N's screams grow louder and less human, the very air around him growing thick with energy and pressure. A spherical barrier appears around the two which collapses in on them.
Just as this cacophony reaches its peak there is a sudden stillness in the air as a camera shows a large spear flying into entity N's back. There is silence for a moment and then, suddenly, a massive shockwave which causes several coastal tsunamis blinds and destroys all equipment within its radius, and when feeds return 3812 is seen resting in place as if none of this had transpired.
Entity designated SCP-XXXX, classified keter/neutralized.
