Sources:
"YTPMV - Doomsday Zone" by tehpitchshiftdude https://www.youtube.com/watch?v=hHIBieVs_Ow
"Doomsday" by ImpossibleCarl69 https://www.youtube.com/watch?v=0Q6WLIU9KGE
"Doomsday in Planktopolis" by OHMYItsGODzilla https://www.youtube.com/watch?v=TvVrlI6P76g
"The Doomsday Zim" by  VanillaFUBAR https://www.youtube.com/watch?v=je1R5dUzD24

Yeah I cut it off because not all of them had that part