There are 6 types of characters in Final Fantasy Legend III:
Humans, Mutants, Beasts, Monsters, Cyborgs, and Robots.
Humans and Mutants
Stats increase when levels are raised. Can use weapons and armors.
Beasts
Beasts can eat Meat of stronger Beasts to become stronger. Also becomes
stronger Beast when levels are raised. Most skilled with martial arts
attacks.
Monsters
Monsters can eat Meat of stronger Monsters to become stronger. Can't use
weapons or armors, but can use magic. If a character turns into a
Monster they have the Talents of the Monster, plus 100% of the HPS and
MPS data of the Monster.
Cyborgs
Cyborgs advance by installing parts from other Cyborgs and by adding
equipment. Weapons & Shields increas Attack and HPS. Helmets and Body
armor increase Defense and HPS. Gloves and Boots increase MPS and HPS.
When a character turns into a Cyborg they only retain about 30% of their
original HPS and MPS, 70% of their original Attack, Agility, and Magic
strength, and 20% of their Defense rating.
Robots
Robots advance by installing part from stronger Robots and by using
capsule parts: HP, Attack, Defense, and Speed. Characters turned into
Robots will have all their original stats lowered. They can't use Magic
(except Float and Dive).
A character can change to a different type by either eating Meat left by
an enemy or installing Parts left by an enemy. The controlling element
of the new type is dependant on three things: the controlling element of
the character, and the controlling element of the enemy that left the
Parts or Meat.