Gaster had failed. The demon he fought was too strong. For him. but...maybe...With the last of his magic Gaster reached into the code of dimensions and disappeared into the void. Time had stopped for the underground but he could not hold it long. with the last of his strength he modified the code... and then collapsed. time resumed.
The demon and the child found themselves in separate bodies on a large stone platform near the core. ten meters above the lava and with no escape. On the other end of the platform reality seemed to shudder. Then, with a loud crack, a door shaped hole formed. the area around it glitching with static like a faulty television. Then... He stepped out... A tall lanky skeleton with grey bones riddled with metal, wearing a tattered and torn lab coat , like it had been in an explosion, with all but the bottom two buttons ripped off and stained black in some places. he was also wearing black tracksuit pants, same condition as his lab coat, with his hands in it's pockets. his shirt, with the same condition, was blue and had "I'm a mechanical engineer, I solve problems you don't know you have in ways you cant understand" written on it. the most shocking part about him was his head. the entire area around his left eye socket to his nose and jaw was missing. where it was, navy blue and orange static shone out from his blue and orange eye light.
"Ah, it has been a while since I have done field work" He said, his speech garbled and full of static.
"Out of our way! We have a world to destroy!" the demon yelled at the figure.
"Oh. and why should i let you? What gives you the right to control the lives of others? Who do you believe you are in this world, to control it?..." He replied.
"I AM IT'S GOD NOW!" The demon yelled back. "SO GET OUT OF OUR WAY OR WE WILL KILL YOU!"
"I guess that you are who i am supposed to stop" The figure sighed. "The Gasters never were very good with practical problems...I suppose I shall have to stop you"
The three clicks of engagement sounded before the two 'humans' found themselves in battle. Static and glitched music notes filled the silence. "C'mon frisk... lets kill him" The demon giggled before running madly at the skeleton and slashing her knife right at his spine. With a crackle of energy he dissipated into static as the knife went right through. another crackle and he reformed.
"Now now children. don't you know not to play with knives?" he teased.
The demon screeched and yelled at Frisk to attack him. They did, but only to find the skeleton dissipating again.
"I don't normally enjoy fighting but with all you have done and all this energy I have built up I suppose I can make an exception this time and have some fun. " the figure lifted both his hands out of his pockets and the gaping hole in his skull filled with a massive surge of magical energy, the light shining out of it like a star. multiple huge dragon skulls warped into existence, about the same size as a gaster blaster but with huge horns running out of their head, covered in spikes, and sharp jagged teeth. Large jagged bones, sharpened to a needle point, smashed out of the stone around him. Two slabs of earth broke out to his left and his right and two huge skeletons, four meters tall, covered in metal armor and wielding large bones with steel spikes embedded in one end like a mace, rose up and stared down at their targets. Then...out of the lava rose a massive bone serpent. at least twenty meters tall with a spiked spine and a huge skull like his other blasters but with four eyes. with an earsplitting whine the serpent and blasters opened their maws and let large balls of energy form.
"My turn" was the last words the two humans heard before all hell broke loose.