Okame-chan

Okame-chan is a scanning gadget shaped like a mask, invented by Child Emperor to gauge and score raw physical power. It first appears in the manga chapter Numbers. Rather than guess, the device produces a figure meant to rank one body against another, and Child Emperor uses it to size up heroes, animals, and monsters alike.

The tool arrives at its readings by scanning a subject's muscle bulk and nerve growth, then weighing those against the individual's mass. To calibrate it, Child Emperor first scans a comparatively weak hero and uses that value as a baseline to scale everyone else. It can rate humans, beasts, and Mysterious Beings, but it cannot read mechanical bodies such as cyborgs. Its range is capped on both ends: it fails to score anyone far too weak, and it simply cracks when confronted with strength beyond 9999, without indicating which extreme was hit. Child Emperor cautions that the resulting numbers are not a true gauge of combat ability, since the machine takes no account of supernatural talents like psychokinesis.

Child Emperor is the device's creator and sole operator, using Red Muffler's reading of 100 as the benchmark. Sample results include the Great Philosopher at 2442, Child Emperor himself at 1880, Stinger at 1600, Darkness Blade at 759, and a bear at 905. Some readings fall outside the scale entirely: Saitama and Jumping Spider's lower body top out the machine, Genos cannot be scanned as a cyborg, and King and Sitch register as too low to measure. Fubuki lands at just 19 because her psychic power goes uncounted.