Self-Sustenance

Superman breathing in space

Background

Self-Sustenance is the power to exist indefinitely without requiring basic necessities for survival, such as air, food, water, or rest. This ability can manifest naturally in certain beings or be the result of external enhancements, abilities, or physiology. For instance, undead entities commonly do not require oxygen, while non-corporeal beings or those with Nonexistent Physiology may inherently possess this capability.

Applications

• Surviving in hostile or extreme environments, such as space, deep underwater, or toxic atmospheres.
• Immunity to hunger, thirst, or exhaustion.
• Resistance to effects or manipulations related to biological needs, such as suffocation, starvation, or forced sleep.

Variations

• Respiratory Self-Sustenance
  The ability to live without requiring oxygen or any other breathable substances. This variation enables survival in environments such as the vacuum of space, underwater, or amidst toxic gases.
  • Examples: Hat Kid (A Hat in Time), Mario (Super Mario Brothers), Sonic the Hedgehog (Sonic the Hedgehog)

• Nutritional Self-Sustenance
  The capability to survive without food, water, or other nutritional resources indefinitely. This often provides resistance to poisons or harmful substances that target digestion.
  • Examples: GIR (Invader Zim), Freddy Fazbear (Five Nights at Freddy's)

• Restful Self-Sustenance
  The power to function without rest or sleep, resulting in endless stamina and immunity to exhaustion. This variation can also grant resistance to sleep-based abilities or manipulations.
  • Examples: Whis (Dragon Ball Super), Demons (Megami Tensei)

Possible Limitations

• May not include resistance to other physical needs outside of the specific variation (e.g., a user with respiratory self-sustenance may still require food or sleep).
• Certain extreme environments, such as those involving multidimensional effects or conceptual forces, may surpass this power.
• In rare cases, reliance on the ability may weaken or dull the user's experience with natural processes (e.g., a being without the need for rest may struggle to perceive fatigue-related states in others).