After the original Ultraman merges with Hayata Shin in 1966, he should have faced ordinary Earth monsters according to the original TV storyline. But the moment the rift opens, the first batch of “hybrid monsters,” carrying the genetic markers of Pioneer evolution, comes ashore. These monsters are naturally capable of absorbing Specium-type light energy. When the original Ultraman's beam hits them, their shells absorb most of its energy and convert it into stamina.
Over the next three years, the original Ultraman endures 17 high-intensity battles. His energy core remains under constant strain, until it finally goes dark while he fights a Level Four monster. Hayata Shin loses the related memories and returns to human society to live in obscurity.
