Future installments characters would include...
- More Showa Riders.
- Riderman (not just as an assist character for V3)
- X-Rider
- Stronger, with Charge Up Form
- Skyrider
- Super-1
- ZX
- Other Heisei Riders and forms.
- Another Agito
- Dark Kiva
- Ixa Rising
- More movie Riders and forms.
- Shin
- ZO
- J
- G4
- Psyga and Orga
- Glaive, Lance, and Larc
- Kabuki
- Caucasus, Hercus, and Ketaros
- Gaoh
- Rey and Arc
- Yuuki, Skull and Hijack Forms (as two different characters)
- New Den-O Vega Form
- G Den-O
- Diend Complete
- Accel Booster
- Aqua
- Poseidon
- OOO Super Tatoba Combo
- Nadeshiko
- Fourze Rocket States
- More Riders and forms from specials. (Technically ZX is from a special but he is counted as the 10th Showa Era Rider)
- Hyper Gatack
- Kamen Rider G
- More Rider-like fighters.
- Electro-Wave Human Tackle
- GanGan G (as an assist for Skyrider or a Joke Character)
- V-1 (Toru Hojo)
- Alternative and/or Alternative Zero
- Riotrooper (Naoya Kaido)
- Confirmed, but only as mooks in Climax Scramble.
- Stage show Riders.
- Super Imaginative Chogokin (S.I.C.) Riders and forms.
- G1
- Mirage Agito
- Garren King Form
- Leangle Jack and King Forms
- Manga Riders
- Black (Manga Version)
- Gaia
- Skull Rider