If you wish to add the Neopets ‘Turmaculus’ avatar, you have to be willing to sacrifice a Petpet. The avatar is awarded after waking the Turmaculus, if he eats your Petpet. It is only possible to wake him up for one hour in a day, the best way to ascertain which hour to check in, is by looking at user made guides such as this one. Click here to go visit the Turmaculus now.