Riki (Kiva)/Zi-O

In 2008, Riki (力（リキ）) is the human form of Dogga (ドッガ) and servant to Wataru Kurenai. In present day, he comes serve Yuko Kitajima.

Zi-O
Dogga was summoned by Another Kiva in the year 2019 and served as her henchman, fought with Kamen Rider Zi-O, Geiz and Woz.

After Another Kiva was defeated by Woz GingaFinally, Dogga turned back into his weapon form with Basshaa and was left in a church.