Scaledon (ウロコドン, Urokodon) was a Mysterious Being that escaped from the Hero Association's facility. It can be considered the main antagonist of the Squadron extra chapter.
Scaledon had been captured for study and exploitation by Metal Knight then handed to a to former coordinator of the Z-City Heroes association Branch who intended to sell its scales to a collector of monsters. But the creatures new feeding habits while in its sheltered environment caused it to mutate into a more vicious form breaking free from containment eventually escaping into forest which divides Cities Z and Y.
Powers and Stats
Origin: One-Punch Man
Classification: Monster, Wolf Level Threat (Former), Demon Level Threat
Powers and Abilities: Superhuman Physical Characteristics
Lifting Strength: Unknown
Striking Strength: City Block Class
Durability: City Block level
Range: Extended range due to sheer size
Standard Equipment: None
Intelligence: Animalistic in behavior
Weaknesses: None notable