Rainbow Octopus, clearly photoshopped ;) Octopuses sometimes do change colors though, but this one would have to be a mental case to look like this I think??
Pluma e interior de brujula
Compass with skull sleeve tattoo - 40 Awesome Compass Tattoo Designs
Stone Lion by CindysArt on DeviantArt (detail)
Eliza by badfish1111
Heath Ledger as Joker,done by Stefan Müller Black Rainbow Tattoo Theatre Zwickau
Tattoo done by Stefan Müller Black Rainbow Tattoo theatre Zwickau