EDIT-2: I finally figured out the code: "0009" WOOT WOOT! I figured something out

This afternoon I was messing around with codes in the setting menu, I already know the 4321 code (blitz) and the 1234 code (Johannes Kristmann, one of the creators)
But I tried out random numbers on the keyboard, and I ended up with a character that had no avatar/art. Stupid me figured that I knew the code, so I tried the 1234 code then back to the code that I had discovered, which I didn't remember correctly, or was more than 4 numbers as to keep it secret?
the numbers were between 5 and 0, I know that this sound dumb, and made up but I'm telling the truth, I'm devoting the rest of my evening to finding this code, from what I can remember it looked like a explorer that was never finished/still being worked on.
If the Devs are reading this, could you please fill me in on it so I don't go crazy/the others don't think I am, of course its a secret for a reason, but I'd love to hear your side on this
