A Garbage Isekai
A Dark Lord made of trash. What else is there to say.
Born in garbage, destined for greatness. This strange creature of rejected part claws his way to the top against all odds. with other beings made of similar debris to help him and a mysterious benefactor, It won't be a question of if the hero can stop him, but if he'll be able to stand the smell of him coming.
And there will be trash waifu's, maybe.