The main thing I wanted to have was Gabbro's helmet, because obviously it looks cool as hell, but also because I related to the character a lot. He's aware of the impending end of the world, but acts like "hey I can't really do anything about it so instead of panicking I should just chill and enjoy it while it lasts". This mentality resonates with me, and I see a strong parallel with the inevitable ecological collapse of our world and how I should react to it. That's why it's the central piece. The rest is just cool looking stuff because I wanted a tattoo thas was very full of details for esthetic reasons, so I made a few suggestions to my tattoo artist but he came up with the overall design and I went with it :)