Greg is a smaller but strong Gojira who likes making new friends and helps keep Tokyo safe from the other Kaiju. He constantly looks up and idolizes his brother, Godzilla. Regardless of his nice personality, he struggles to make any progress for a mate during mating season. He can use atomic breath, can go thermonuclear and is good in combat just like his bigger brother, but tends to not fight unless necessary. Since he does not have a mate, he is eager to find them one day, guy or girl.