Oh yes, do you remember what this is from? A cartoon? A game? A comic book? Can you even remember what decade this is from?? :D Yup, straight from 1991, it's the Slug from Commander Keen: Secret of the Oracle! XD I love these guys, they were the most unwitting innocent guys in the game, and I hated to kill them. Yeah, your gun in that game was called a neural stunner but let's face it, you were killing the guys. And they never hurt anyone! All they did was leave the occasional lethal poot, but you can't blame a species for doing what it has to! They were cute when they slithered and they weren't stupidly obnoxious like that fire-breathing ball, or that ugly mushroom or the flipping rock... ahh memories. Enjoy!
....still haven't beaten the game...

And yes Snapai, this is that fanart that I said you wouldn't guess, though you may have forgotten already, hee...

Commander Keen and the slugs are developed by id Software.