Questions in UNDERTALE

Does Asriel have a rainbow gaster baster
Whats your favorite fangame?
I can't find it on google, so I'll ask here: what's the lead instrument in song that might play when you fight sans? I think it sounds really cool and I've heard fan-songs use it, so I know it's somewhere out there. Thanks :)
so i made movement for my frisk but when i go up or right it sucks you there like teleports you can anyone help?

(Undertale vs Touhou) tn made by me
Asriel Dreemurr vs Marisa Kirisame
Heya guys, so i wanted to test drawing sprites a bit, i wanna ask if you are already using something to te me what is the app.
Note: it is better to be for pc, but it can also have both mobile and pc support.
Does anyone know how to make a over world and characters for my au? or a better engine?