|Gallery | Relationship | Quotes|
|Duel Monster statistics|
Roboppy was first seen cleaning Yusaku's bedroom. Ignis called her an idiot; Roboppy replied that "idiot" was a forbidden word. Ignis asked Roboppy if she wanted to be smarter. He promised to fix her into a better AI if she became her follower and freed him to which she agreed. Roboppy and Ignis panicked when Yusaku returned home and had roboppy put him back on the shelf.
|Main||Aoi Zaizen • Go Onizuka • Yusaku Fujiki|
|Den City||Aoi Zaizen's robot • Den City orphanage owner • Eagle • Emma Bessho • Frog • Go Onizuka's manager • Hosoda • MC • Naoki Shima • Pigeon • Roboppy • Shoichi Kusanagi • Tanaka • Sato • Suzuki|
|SOL Technology||Akira Zaizen • Bishop • King • Knight • Pawn • Queen • Rook|
|The Knights of Hanoi||Dr. Kogami • Revolver • Specter|
|Other characters||Revolver's father • Shoichi's brother|