Imagine an ii and undertale crossover:
Sans, Toriel, Snowdrake, and Cheesy just telling a load of bad puns
Mic and Papy yelling at them(loudly) to stop
Taco and Flowey trying to get loads of human souls to become God-like and take over the underground/object world(depending on where they are)
Paintbrush and Undyne getting angry at everyone(if they all annoy them both enough(which should be easy))
Fan, Test Tube, Alphys (and possibly Ghaster) needing out with each other
Yin-Yang with Frisk and Chara(Yang and Chara trying to kill everyone and Frisk and Yin trying to stop them)
Soap and Washiwa(I think that's it's name) cleaning EVERYTHING
Suitcase, Balloon, Whimsalot, Shyron and Napstiblook being all depressed together in a corner(let's face it they are)(Alphys would probably be with them, but she is too busy nerding out)
Salt, Pepper, Bratty and Catty together
Bow, Lightbulb and the Temmies..........oh god no! I need to stop!

Anyway guys, that's all for now, (sorry for the nightmare fuel with Bow and Lightbulb meeting the Temmies.......at least I didn't also mention dum original Taco.........the day all of those come together will be the day the world ends) thanks for reading, I hope you enjoyed, and I will see you in the next chapter, bye 😜