Fusultimum

Fusultimum is a Pokemon made in Batch 6 in the Fun Pokemon series.

Origin
Fusultimum is based off of the Bacteria Monster from the Mini Story centered around it. Quite literally long story short, an invincible poop monster made of bacteria that are capable of extremely fast evolution processes tortured Dworlock for the rest of his life for him refusing to give it any love, as expected since he is its "father". After it finally killed Dworlock after many long years, it went to the Alien Planet, another mini story, where it asexually reproduced into enough copies to become a member of the planet's ecosystem. Its moves and abilities follow this concept, as shown:


 * Gunk Shot, Venom Drench, Poison Gas, and Black Sludge are all it using or being made of a toxic substance (poop or fart cause that's literally what it is).
 * Heal Pulse is him continuously having Dworlock on life support, feeding him necessary nutrients, for the duration of his life, to eternally torture him.
 * Wonder Guard is it being invulnerable to any kind of attack or damage, as said in the story.

Strengths
Fusultimum excels at being a support Pokemon, perhaps even being one of the best, being able to help it's team and weaken the opponent while also being difficult to kill. It has Poison Gas to annoy both opponents with poison damage and Venom Drench to debuff them, annoying them further. It can also help its allies with Heal Pulse to keep them in the game. And of course he has Wonder Guard to make itself unkillable except by Ground and Psychic type moves, drastically decreasing its ability to die. It's Black Sludge is there to heal whatever damage it does take to further increase its invulnerability. Finally, it has Gunk Shot as a way to deal direct damage if it has nothing better to do.

Weaknesses
Despite him only having two type weaknesses, it is able to easily die to either one due to its below average defenses. He is also very slow and will therefore not be able to do anything most of the time until everyone else went. It's also worth noting that he is completely useless against steel types.

Trivia

 * Fusultimum used to be an Alolan Muk with a different moveset, but was changed because only being able to take damage from one type of attack was too broken.