(Your lightbulb//or any other character)
So basically humanized objects with powers and other humanized objects non powderd used to get along very well. Until one day a huge fight broke out so objects with powers were sent to an underground world and non power objects were at the surface. To get to the underground you'd have to walk far and beyond and fine a certain deep hole surrounded by flowers. Meanwhile you under the surface. You were the strongest out of all the objects with powers because there were a few objects with power because lack of population and stuff. There was marshmallow who takes care of objects who fall into the underground, test tube and apple who likes science and apple liked fighting. Knife who definitely liked fighting and also has a bar like place. You were a lazy one who came up with mostly bad puns and some good and your brother fan loving to make spaghetti and taller than you who also tried to capture objects without powers underground to become a Royal guard live in a house plenty of room and space. There's a few more objects but that'll be for later. So today you and your brother were watching TV normal day in snowdin(place with snow and few shops and food places. Marshmallow at her place came out to check for any objects without powers like her normal day thing and then actually finds one in forever. Paintbrush who had came down on purpose and object without powers notices her and gets up.