Hi my name is Alex and I'm going to tell you about Cerberus. Cerberus is the guard dog of the underworld. His master is Hades. Cerberus has three heads that are all really mean. Cerberus was taken to earth by Hercules for one of his 12 labors. Cerberus' teeth are really sharp. Cerberus guards the gate to the underworld for all the people that come from the earth. I'm really glad that the under world is underground. I hope I don't have to go there soon!