Custom Mini Figure Heads - Mr Invisible Customise your LEGO minifigures with a custom printed LEGO head. Totally transparent! If it wasn’t for his black rimmed glasses you just wouldn’t know he was there! This design has been created by our very own LEGO loving print team at the Firestartoys print studio. The design is directly printed on to the LEGO head for a perfect & play resistant finish, no horrible stickers or vinyl, just pure printed awesomeness.