|Gallery | Relationship | Quotes|
|Duel Monster statistics|
Roboppy was first seen cleaning Yusaku's bedroom. Ai 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. After returning to Yusaku's house Ai flexed his muscles to impress Roboppy. Roboppy clapped, while Ai thought how cool he looked to "dumb" robots. Roboppy exclaimed that was the forbidden word, but Ai promised when he was complete, he'll "start to do that", and swore to make Roboppy smarter, and both started blushing.
|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 • Isomaki • MC • Naoki Shima • Pigeon • Roboppy • Shoichi Kusanagi • Tanaka • Sato • Suzuki|
|SOL Technologies||Akira Zaizen • Bishop • Hayami • King • Knight • Kitamura • Pawn • Prototype Ai-A • Prototype Ai-B • Queen • Rook|
|The Knights of Hanoi||Dr. Kogami • Revolver • Specter|
|Other characters||Shoichi's brother|