"Like a big happy family!"

This painting has a story.
It started in June 30th, when I attempted this beast. I took my progress slowly but surely.
Making many progress shots along the way. By the end of July, there was a hiatus. After which I find out that my SAI file had become corrupt when I was nearly finished.
To fix the corruption I did many things, I used software made to salvage files as much as possible, I ran check disk (which took 10 hours), and lastly, out of desperation, I e-mailed Systemax's (creators of Paint tool SAI) support.
It was only after a week that I had gotten a reply and it was to my surprise a positive one! They managed to salvage my sai file, but with a few quirks. Some layers had gone missing, and chunks of the rendering work I had already done were gone. I fixed some of it by frankensteining two progress shots in and re-painted the rest.
And today I finally finished.

One of Undertale's main themes is Determination, and this painting took lots of it.