Atticus has the appearance of a typical Cardigan Welsh Corgi, having short stubby legs and a bushy tail. His fur is primarily golden yellow with a white underside and he wears a gray crown with a red dome.

Atticus has an air of nobility, befitting his title of Corgi King, and cares deeply for his people. Though kingly, he is still a dog and often times it shows: he barks at squirrels and his own reflection, likes belly rubs, and knows how to use his cuteness to manipulate people.