- "People transform the power in their hearts into strength and the will to fight."
- ― Samus Aran (Metroid: Samus & Joey)
- Will Affinity
- Willpower Affinity/Empowerment
Users become stronger, faster, more durable, etc. by willpower of oneself and others, possibly unlocking abilities related to the affinity and enhancing the existing powers. Some users may be able to draw sustenance from the will-power or even slow or stop aging.
- Decelerated Aging/Semi-Immortality
- Enhanced Condition or Supernatural Condition
- Fear Masking
- Self-Power Augmentation
- Emotion Manipulation
- Enhanced Charisma
- Enhanced Willpower
- Indomitable Will
- Inner Power
- Power Augmentation
- Strong Heart
- Strong Soul
- Willpower Embodiment
- Willpower Manipulation
- The user can be overwhelmed by fear.
- The user can be clouded by doubt.
- Power Suit (Metroid series)
- Field Knuckle (Metroid: Samus and Joey)