Seiya Kuroki

is a criminal on the wanted list who aid Negataros in return for world domination, joining his Negataros Army. In the end, he is arrested by Kazuya after a fist fight.
==Behind the scenes==
===Portrayal===
Seiya Kuroki was portrayed by .
Category:Kamen Rider Den-O
Category:Kamen Rider Kiva
Category:Movie-exclusive Characters
Category:Movie-exclusive Villains
Category:Villains
Category:Den-O Characters
Category:Good turns evil