Have you ever found yourself losing your keys because those plain old adhesive hooks don't get the job done? Have you ever wished your key holder could strike fear into the eyes of your enemies? Well look no further- you've found the most beefy, the most prehistorically dominant, the most fricken sick 3D print that will ever grace your printer. Just slap a command strip or similar product on the back and you're golden.
The KEY REX was created in Meshmixer from thingiverse.com/thing:16331 and thingiverse.com/thing:240953. From there, I brought it into Inventor to remove its back half and add the plaque and lettering.

If you want to print this, I'd recommend slowing the print speed down since it's pretty complex. The size isn't too adjustable, making it significantly smaller will probably require a nozzle smaller than 0.4 mm for the teeth to come out okay; make it significantly larger and the key ring won't fit over his fists. If you have your support settings dialed in, you probably want to use supports everywhere and just be gentle when removing any in the mouth. Feel free to hit me up with any questions or comments and I'll try my best to answer them!