Pythagoras Damashii

1="Kaigan: Pythagoras! (Energy charging) Sankaku no teiri! Ore no iu tōri!"

- Transformation announcement

2="Tengan: Ghost! Mega Ulord!"

- Transformation announcement with Mega Ulorder

Pythagoras Damashii (ピタゴラス魂) is a white and gold form of the ghost Riders based off of, an Ancient Greek philosopher whose renowned intellect brought forth new ideas in mathematics such as geometry and the creation of the. Accessed through the Pythagoras Ghost Eyecon, this form bears a currently unknown helmet with a currently unknown faceplate.

Users

 * Kamen Rider Specter (Kamen Rider Ghost: Ikkyu Intimacy! Awaken, My Quick Wit Power!!)
 * Kamen Rider Ghost (Kamen Rider Battle: Ganbarizing)
 * Kamen Rider Necrom (Kamen Rider Battle: Ganbarizing)