W. D. Gaster overlord of all remaining monsters (breakertale)

Description: gaster killed frisk and tempory took their soul,he escaped and later killed asgore and undyne and brainwashed sans into killing his brother and began a purge across the underground to kill any monsters who resisted,he is the most powerful monster and has lv:18 and uses bones and gaster blasters,in the refuge run(neutral run) he escapes the underground and begins a secound war with humans that ends with mush of monsterkind killed off along with gaster,sans,and toriel expect for a handful of monsters who are sold into slavery,and in the last reset run(pafest run)gaster dies,but he destroys frisks soul and the underground is left without resets and things begin to fall apart,and in the fallen one ending(genocide run) (frisks finally gains their soul and resets timeline)banishing gaster back to the void for good