Some endoskeletons I made a while back. The one on the left is spring-safe, which means it can be openly used as a costume. The one on the right is not spring-safe, and has a much higher chance of springlock failure. If you aren't familiar with the concept, springlock failure is basically where, while wearing a suit such as one of these (which are typically inside of mascot suits), the metal parts and such which pull in while a human wears it jolt back into position (which are there so they can operate on stage without a human in them) and dig themselves into your flesh. This normally kills the person inside the suit. Don't worry, though! Not like this is likely to happen. You usually have a 50% chance or higher to live... or less. ;) Drawn with FireAlpaca.