Undertale: Gasterblaster

SO incredibly badass!

I actually found it originally on merchandise on Redbubble... let me guess, you're not "thorsend" on there, are you? :/ If not, you could make them take it down for copyright infringement, cuz someone's making money off of your work.
www.redbubble.com/people/thors…

I WANT to buy some of them, but I won't if it's not you; I won't knowingly support art thieves.

I'm glad my attempts at reverse-googling it have paid off and I found your page at least.