Undertale: Sans and W.D. Gaster

Description:

Some Undertale fan art. The story and characters behind this game is fun to watch/interact with. You can either choose the path to befriend and save the inhabitants of the underground world or you can become a killer and massacre them all. For those of you who don't know, Undertale is about a gender ambiguous child that falls down into a world of "monsters" and, if you choose the pacifist route (the true ending), befriends multiple characters along the way as well as find out why they were imprisoned there in the first place. I'd recommend it, but chances are the majority of you out there have already played and enjoyed the game ^^. I really want to know what these Sans and Gaster's relationship was. You only know about Gaster through messing around with files and it's hinted that he and Sans had worked together in the past due to the fact Sans has weapons called Gaster Blasters and that make shift lab behind his and Papyrus's home. There are also these creepy, grey creatures that give little detail as to what happened to Gaster (he fell into one of his experiments and ended up scattered across space and time). There are a few theories of what Gaster was like and what ties he has to Sans and San's brother, Papyrus, but I personally like the one where Sans was Gaster's lab assistant. Also, Gaster is saying: "Sans...I've missed you so very much."This can interpreted as either a shipping pic or something else if you're not into that. Either way, the little story behind this is that Gaster is tired of being alone in the void and wants the company of his former assistant. Sans and Gaster @ Toby Fox