Arrival: Sans is going to be getting the lay of the land and trying to figure out what's going on without letting on too much that he is entirely out of his depth. He is definitely not going to tell anyone that he is a skeleton monster stuck in a human body. He'll be trying to meet people and will try to keep things chill. Of course, with his brother living right next door, Sans will be spending a lot of time with Papyrus/at Papyrus's house, too. He'll definitely be spending some nights out stargazing, because being able to see stars is exciting.
After that Halloween fiasco, Sans will definitely be getting a Christmas tree, and he will try very hard not to slip up and call it a Gyftmas tree. He may try to con someone into carrying it home for him.
Christmas Village: Sans will check it out a little and participate a bit, but honestly winter holiday celebrations and general snow games are pretty typical for him so he's not going to be especially interested. Still, he'll definitely be up for messing around and general winter pranks. He has a lot of experience with winter, so theoretically he would help with figuring out how to do things, but he will not be helpful like that.
Gala: Uh. We'll See. Sans wants to go but he also is the exact opposite of a formal attire kind of guy. If the HHA unsettles him enough or someone (probably Papyrus) forces him into a proper outfit, then he'll be hanging out at the party eating all the food, talking to people, and trying to keep an eye on the NPCs to get a read on them. If not, we'll see what the results of misbehavior are once we get to the party.
Sans | Undertale
After that Halloween fiasco, Sans will definitely be getting a Christmas tree, and he will try very hard not to slip up and call it a Gyftmas tree. He may try to con someone into carrying it home for him.
Christmas Village: Sans will check it out a little and participate a bit, but honestly winter holiday celebrations and general snow games are pretty typical for him so he's not going to be especially interested. Still, he'll definitely be up for messing around and general winter pranks. He has a lot of experience with winter, so theoretically he would help with figuring out how to do things, but he will not be helpful like that.
Gala: Uh. We'll See. Sans wants to go but he also is the exact opposite of a formal attire kind of guy. If the HHA unsettles him enough or someone (probably Papyrus) forces him into a proper outfit, then he'll be hanging out at the party eating all the food, talking to people, and trying to keep an eye on the NPCs to get a read on them. If not, we'll see what the results of misbehavior are once we get to the party.