Ability:

Has or can generate quills on their head or body

Limitations:

- Spikes can be broken or damaged
- Cannot control protruding spikes
- User may injure themselves with their spikes
- May be permanent fixtures, not retractable

Variations:

- Bone Spike Protrusion
- Crystal Spike Protrusion
- Energy Spike Protrusion
- Quill Protrusion

Users:

- Quill (Marvel Comics)
- Raina (Agents of S.H.I.E.L.D.)
- Porcupine (Marvel Comics)
- Spyke (X-Men: Evolution)