Fang Memory

The Fang Memory (ファングメモリ), also known as the Fanged Memory (牙の記憶), is a special Gaia Memory that was solely created to protect Philip and act on his orders, enabling him and Shotaro to transform into FangJoker. It can change between its Live Mode (ライブモード), which resembles a Dromaeosaurid, and its Memory Mode (メモリモード), the top of which resembles a dinosaur's head. When used, half of Kamen Rider Double becomes the white Fanged Right Half (牙の右半身), enabling Kamen Rider Double to fight like a berserker while altering the left half to match it in being animalistic in design. Being made to protect Philip and act as his bodyguard, the Fang Memory shows up whenever he is in danger or whenever he calls for it. Unlike the normal transformations into Kamen Rider Double, this transformation is initiated by Phillip and the process causes Shotaro to fall comatose and transfer his mind until they revert back to normal.

Being made to protect Philip, the Fang Memory will only show up whenever he or anyone in his vicinity is in danger. Unlike the normal transformations into Kamen Rider Double, this transformation is initiated by Philip and the process causes Shotaro to fall comatose and transfer his mind until they revert back to normal. Philip could not control while being transformed initially, causing him to go berserk soon after transformation. Later with the help of Shotaro and successfully imposing his will on the Fang Memory, he manage to control his transformed state, although he still suffer the toll from extensive use.