Yes, I know that resembles Godzilla Jr. Neo, but before he released Neo Minilla, I believed Godzilla Jr. to be a realistic character. In fact, my version will have both names.
Height: 20 meters
Mass: 5,000 tons
Minilla (called Godzilla Jr. by the Global Defense Force) is the smallest Kaiju known to man so far. Despite being the same species as Godzilla, he is very timid at birth. In fact, Minilla was so friendly to humans that he would actually eat out of their hands like a horse. Being younger, Minilla could only blow little smoke rings, though he developed a real beam when he was a third the size of his father, and he shared the same regenerative abilities. The small creature also possessed considerable intelligence and remorse, often hesitant to kill Kaiju who are corrupted but were originally good. When Godzilla melted down, he released huge amounts of radiation, and Minilla absorbed that radiation, mutating into a new Godzilla. When his human family is threatened, Minilla will do anything to keep them safe, despite his soft heart.
-In first few moments of life, could only spit smoke rings, but as he grew larger, he developed his own atomic breath
-Same regenerative power as his father
-Very good-natured to Masato and his friends, even after fully maturing
Character (c) Toho, Co. Ltd.