Belle and Dinah, the two Cyan girlies treversed the worlds in search of new friends and foes ( That one is mainly for Belle but you know her. )
They found themselves looking down upon another fangame titled "Undertale Cyan". That's it! Their friend group is growing!
They picked up the small goober called Chopper and continued their adventure throughout the world...

Oh! And it looks like they left us links leading to the place Chopper was found! I have no idea if this was disclosed or not, but Belle shared this with me so probably isn't public information. Well, Here you go!

https://gamejolt.com/games/undertalechopper/922314

You might've seen Chopper somewhere already, The sightings of this cutie were said to appear on Twitter and Youtube, but i'm sure you already knew that.

Well, with that;
Go Follow Undertale Cyan!!
https://gamejolt.com/games/undertalechopper/922314
https://gamejolt.com/games/PKUndertalecyan/891042