The power to transform oneself into a sphere-like form. Variation of Geometric Physiology.
- Rolling Attack
- Sphere Mimicry
- Spherical Conversion
The user can convert themselves into a ball for attack, defense, and/or mobility. The user's skeletal structure is often highly flexible to allow them to do so with ease.
Ultimate Cannonbolt (Ben 10: Ultimate Alien) can roll himself into a spiked ball.
Knuckles the Echidna (Sonic the Hedgehog)
Amy Rose (Sonic the Hedgehog)
Cream the Rabbit (Sonic the Hedgehog)
Shadow the Hedgehog (Sonic the Hedgehog)
Silver the Hedgehog (Sonic the Hedgehog)
Vector the Crocodile (Sonic the Hedgehog)
Metal Sonic (Sonic the Hedgehog)
Scourge the Hedgehog (Archie's Sonic the Hedgehog)
Samus Aran (Metroid) using the Morph Ball.
Isobu (Naruto) rolling around.
Choji Akimichi (Naruto), using his family's Multi-Size Technique...
...then using Human Bullet Tank.
Super Buu (Dragon Ball Z) performs his mystic ball attack.
Sly Cooper performing a rolling technique.
King candy (Wreck-it-Ralph) In cybug form can curl up and spin at high speeds.