The Armadillo Imagin is an Imagin and an antagonist in Kamen Rider Den-O.
He was voiced by Wataru Takagi.
The Armadillo Imagin made a contract with Ōzaki. After completing his contract to "cut" his host, Armadillo traveled back in time to when his host was recruited by the Shirakaku. The Armadillo Imagin soon encountered Kamen Riders Den-O and Zeronos, fight and overpowering both Zeronos Zero Form and Den-O Liner Form until they escape via the DenLiner. However, Armadillo secretly boards the DenLiner and travels with it as it arrives at the Time Station. Armadillo then attacks the station, but is held off by Urataros and Kintaros with support from Ryutaros. Ryotaro and Momotaros soon arrive as well and the Taros all fight the Imagin in each of their Den-O forms before assuming into Climax Form and finishing off the Imagin.