Ellie’s tattoo in ‘The Last of Us Part II’ There’s a functional reason for the tattoo, which is covering up the bite she has. She suffered from the infected wound that proved her immunity to the virus on the first game. The moth was chosen because it resemblance to a firefly, a nod to the rebel group of that name within the game. But the image is also a symbol of death and compulsion. I did rework the moth a little bit. If you swipe you'll find the original printed version of the game. Really enjoyed doing this project.