Here's Mario, and he's ready to rescue that pinky amoeba called Princess Peach. Or give you a food intoxication that will tie you to the toilet for a day. It can go either way, because he's made of glowing bacteria.
Those pixels are really genetically engineered bacteria, modified to "express fluorescent proteins and carotenoid pigments" by Team Osaka, at the nanobiology laboratories at the University of Osaka, Japan. [Microbial Art via New Scientist]