Papi Earthquake is one of the four Elder space demons. He will likely serve a major role in Episode 3's plot.
Papi Earthquake is one of the first known generation of space demons, having existed eons before the Uncles came into being. In ABCD legends he is often referred to as the great "Papi Hamboney" due to his attempt at transferring his will into a slab of meat to boost his powers.
His powers are unknown, but they are apparently increased a thousand fold when he transfers his consciousness into meat.