Yes, really! The post isn't mislabeled. This is tattoo of a protein named after the Sega video game character. The man with this image writes:
I got the tattoo because I am a cell biology student and love the ridiculous naming of proteins done by the geneticists which discover it. I figured, for my first tattoo, it might as well be something completely unique. I love it though, great conversation starter and very few people have any idea of what the hell it is at first glance.