Okay, my Fanfiction has been set, this is the Rider universe anime crossover.
Kamen Rider Kuuga x Campione (Godou Kusanagi)
Kamen Rider Agito x Saint Seiya Omega (Kin Arc)
Kamen Rider Ryuki x Fate Apocrypha (Sieg)
Kamen Rider Faiz x Kill la KIll (Takaki Inu)
Kamen Rider Blade x Akame Ga Kill (Tatsumi)
Kamen Rider Hibiki x Naurto ( Hitoshi Hidaka)
Kamen Rider Kabuto x Full Metal Panic (Sosuke Sagara)
Kamen Rider Den-O x Assassination Classroom (Zero Nogami)
Kamen Rider Kiva x Vampire Knight (Wataru Kurenai)
Kamen Rider Decade x All anime crossover (Adam Wisp)
Kamen Rider W x RWBY (Susno & Philia Hidari)
Kamen Rider x Bleach (Issei Hino)
Kamen Rider Fourze x Hundred (Hayato Kisaragi)
Kamen Rider Wizard x Chivalry of a Failed Knight (Ikki Kurogane)
Kamen Rider Gaim x Infinite Stratos (Katsuo Kazuraba)
Kamen Rider Drive x Pokemon X & Y (Tomari Shinnosuke)
Kamen Rider Ghost x Fairy Tail (Takeru Tenkuji)
Kamen Rider Ex-Aid x Sword Art Online (Emu Hojo)
Kamen Rider Build x Accel World (Sento Kiryu)
Kamen Rider Zi-O x Date A live (Shido Itsuka)
Others
Garo x Bleach
Kamen Rider Mythical (also known as Heisei Zero Rider)
Kamen Rider Shinobi x Senran Kagura
Kamen Rider Quiz x Baka & Test
Kamen Rider Pirate x One Piece
Hope you like them (I took me await to figure out which anime fit for Wizard).