originally Cosa did not exist. She was replaced by Toy Coso. But in FNaC 2 she was implemented in the game. This was her first sketch:

^ First sketch of Cosa ^

Cosa and Coso in italian means "What" and "Thing", that's because I was lazy and I didn't want to think of original names so I took them for my animatronics.

Coso was supposed to be stupid and somehow funny in his very first sketch, but soon after the game continued Coso became more serious as the game itself

^ The very first sketch of Coso ^

The first 3 games of FNaC (the third one didn't came out because it was trash, like me btw) didn't actually have a backstory, Then when I made the remake I actually put an ugly backstory but at least a backstory in the game!

00100011 00110101 00100000 01110100 01101000 01100101 01110010 01100101 00100000 01110111 01101001 01101100 01101100 00100000 01100010 01100101 00100000 01100001 01110100 00100000 01101100 01100101 01100001 01110011 01110100 00100000 00110011 00100000 01100011 01101000 01100001 01110000 01110100 01100101 01110010 00100000 01101111 01100110 00100000 01110100 01101000 01101001 01110011 00100000 01100111 01100001 01101101 01100101 00101100 00100000 01011001 01000101 01011001 00100001!!!