All ultimates in Alternate Battlegrounds Legacy.
For Sans, A small box appears on the ground. From it a bone will rise. If an opponent is still in the detection area when the bone rises, they get lifted up and blasted by several gaster blasters simultaneously.
For Asgore, you attempt a grab. If it connects, you grab them, launch them into the sky, quickly stab them with your trident before letting them hit the ground, then slam your prongs into them and ignite the area with flames, quickly w