Gvardion (Neobiontomania)

Gvardion - a Neobiont from the Neobiontomania universe. Profile on computer:

Anatomy Dark gray, huge, humanoid creature made of organic rock. Shining orange eyes, massive jaw, and he can form shields on his forearms. Behavior Calm, serious, intelligent, as well as faithful and ready to protect his comrades from danger. Skills Very much strong and tough, his main strength is defensive abilities, such as creating shields, which he can also use as a weapon. It can go on for a very long time without eating or breathing. Very resistant to poisons. Weaknesses He is quite slow and can also be injured by plasma, for example.
 * Type: Earth
 * Character: Neutral
 * Size: 2.25m
 * Human Origin: No.
 * Sapient: Yes
 * Systematics: Protozoa
 * Body type: Stone humanoid
 * Skills: Strength, endurance, increased resistance to poisons, creating shields, low requirements to eat, drink and breathe
 * Natural Weapons: Shields

Known examples
Food Omnivorous, but doesn't need to eat much.
 * Wendell's Gvardion
 * Dr. Wirestone's Gvardion