Let's keep things simple.
You needed help, external help. You were up against an...obstacle that required a certain persuasion you did not have.
Something you reminded yourself you needed to someday fix, as you mounted the beacon device onto a battery inside your bedroom, the small machine whirring gently as it began to charge up.
Unfortunately, that external help could not come from your world, for the foe you were up against, surpassed any other you knew of; leaving you with one choice
You had heard of someone, from a dimensional traveler, a...superhuman; though, he was not described as human. An entity of such power, such grandeur, that there was no foe he could crush, no obstacle he could break, and no force he could decimate. From the whispers and murmurs that the traveller had passed on, you had learned that he only searched for one thing: opponents.
Not as...worthy adversaries, no no, he was no noble warrior. He desired foes, to entertain him, to amuse his existence by fighting them, pushing them to use everything, while he held it all back.
A cruel god, if one so existed.
But, a benefactor, in your situation. You knew for a fact that you would never catch his gaze; you were less than a mere ant, practically bacteria to him. But your problem wasn't, and they would most certainly provide some entertainment.
The traveller had also passed on the process for summoning him, a metaphysical beacon that would fire a certain cosmic frequency, which would alert his interest.
The very same beacon that you were carefully handling in your fingers, the devices almost arcane features as mystifying as it's purpose. It was simple enough for the task you wanted, a single button attached to the side of the large spherical device- you could guess by now that big red buttons were the one consistency in all of the multiverse.
As the beacon whirred to life, its charging up sequence was getting ready to charge, you kneeled down beside it, watching as it glowed a ever-decent blue.
Slowly, you extended finger, feeling like Adam, about to reach out to god.
But, before your finger could land on the button, you felt a brush of wind behind you.
Urgently turning around, you came face to face with a slit of pure white light, one that gave you a violent headache as you stared into, as if you were looking at something you weren't allowed to understand.
You averted your gaze, stumbling back up against the beacon, only catching a glance of the dark figure emerging from the slit, its right hand lowering, as if it had just made this cut in reality.
The light quickly faded, leaving nothing but the monstrous dark man in front of you, floating inches off the ground in front of you.
Dark was an understatement, this man was pure black; you could see light warp around his very edges, like a black hole folding photons, his presence so powerful it seemed to absorb everything he inhabited.
Monsterous was also an understatement; he must have been ten feet tall, his head only an inch below the roof as he looked down at you
You couldn't read his expression (as he had no face to begin with). Yet the shilloute of his head appeared expectant, watching you, waiting for you to say something that would provide his arrival here.
He had already anticipated your attempt to summon him.
Infact, he probably knew EXACTLY why you had called him here. He simply wanted to hear the words from your mouth.
You had only heard his name once; the traveller had been too terrified to repeat himself