From "Kamen Rider Double"

Beast Dopant:

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http://i231.photobucket.com/albums/ee121/Kainsword17/Dopants/18BeastDopant.jpg

Maruo Arima is a bank robber who uses his destructive and self-regenerative powers as the Beast Dopant to attack armored cars. He was given the Beast Memory ten years ago, and was being investigated by Sokichi Narumi until the evidence went dry. The return of Narumi's client Isamu Bito to the detective agency leads Shotaro and Philip to investigate the crimes in the present day. He is weakened by CycloneJokerXtreme's Prism Break Maximum Drive before being eventually defeated by the Bicker Charge Break.

Zone Dopant:

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http://i231.photobucket.com/albums/ee121/Kainsword17/Dopants/19ZoneDopant.jpg

Suzuko Arima, the wife of Maruo Arima, uses the powers of the Zone Dopant to teleport anything it sees into a different area, similar to moving the pieces of a shogi board. In the past, Suzuko used these powers to assist her husband in his crime wave. However, she lost the Gaia Memory ten years ago and it was found by Sokichi Narumi, who then hid it in a bear statue he kept in a vacation cabin. When Shotaro finds it and discovers that it is Suzuko's, she distracts him and takes it from him, enabling her to attack him and help Maruo once more. She is defeated by the Bicker Finallusion Maximum Drive.

©Toei