Ruby Classification System

Hollow size: (Very Small/Small/medium/large/Larger/Huge/Enormous/Gigantic) (i.e from the size of a foot ball at one end...to a Menos Grande at the other)

Hollow Type: (Humanoid/Arachnida (Spider type)/ Anphibious (Frog like)/Reptiles/Bird/Fish Type/Serpent/(any other suggestion)/(Combonations)

Hollow Colour: (Colour could represent types of souls digested such as human/animal/live humans/shinigami/wandering ghosts etc)

Hollow Intelligence: On a scale of 1-20 how intelligent it is, 20 being most intelligent and should be regarded as Vizard or Shinigami Hollow etc mainly...intelligent hollows rarely exist)

Hollow Classification: S A B C D E F G U (S being the highest, U being the lowest threat)

This should help with hollow designation and creation.