Sans

The lazybone monster in the underground and the secret judge and right hand man to the king asgore, usually a jokester (about bones or skeletons) and a lazybone head.

Appearance: A short statured skeleton. just a bit taller than a kid. Wears a blue opened jacket and a white tank top, black shorts with white stripes. white gloves over his skeleton hands and pink fluffy slippers.

In a old hit game Undertale universe. (Happy 10 years buddy!) long ago two races roamed the earth, humans and monsters that fought in a war. the humans won and sealed the monsters feel underground in Mt. Ebott (Did I do that name right?) in the underground there's the ruins were the ex-queen, Toriel resides and take care all the weak monsters in the purple ruins. then right outside that the Snowdin. a place forever incased in snow and forest. after that is the Waterfall, all dark and glowy! with lots of water..because it's waterfall, right after is the Hotlands! red and fire...fire and more lava. which the Core resides which is how all the monsters live and get their food, and energy! after the core is the New Home, it's abandoned gray city and walking on a long pathway where you can see the fray desolate city afar you'll head to a elevator that lead to the Judgement hall, then the judgement hall lead to the king. where the King Asgore (ex of Toriel) resided on.

All characters! (not actually all since I forgot. not a full fledge rpg of Undertale also.)

in ruins there's froggit, and alot of bug related monsters like butterflies and then the caretaker of the ruins, Toriel! then there's a sentient flower called flowery that'll meet you on a flower bed right after you fall. hes evil.

in snowdin you'll first meet Sans The Skeleton! then some other monsters like the Great Papyrus. Brother of Sans! wanting to be apart the royal guard. then some others you'll meet.

Waterfall you can meet Monster Kid, and Undyne a member of the royal guard. you can also find Napstablooks house (Ghost u met in the ruins)

Hotlands is some monsters who loves the hot. like a living monster that's on lava. then Alphys! the royal scientist, she works in the Core and that huge laboratory. then Mettaton the robot created by Alphys.

In new home u could meet Flowery, Sans and Asgore.

About Sans he has stations in all the areas where he just naps and sleep or gives you his specialty, Hot Dogs!

world had magic, Blue magic (Telekinesis, Makes you slow or other stuff.) Orange magic (Make you move uncontrollably always.) and other stuff!