These are the main antagonists in CWH.
- Lucifer Langdon (Luigi777)
- Isaac Kanda/Kamen Rider Solomon
- Bacht/Kamen Rider Falchion
- Ryoga Shindai/Kamen Rider Durandal
- Reika Shindai/Kamen Rider Sabela
- Gunther Prozen
- Thaddeus Valentine
- Hajime Busuzima
- Thornheart
- Sloan (Wanted)
- Dr. Ellie Staple
- Sima Yi (Legend Heroes)
- Millenniummon
- Ark (Kamen Rider)
- Black Hat (Villainous)
- Demencia
- Dr. Flug Slys
- 5.0.5.
- Giroli/Kamen Rider Glare
- Blitzo
- Alastor (Hazbin Hotel)
- John Kreese
- Terry Silver
- Korekiyo Shinguji
- Dai Shi
- Twlight the Demon King
- Hiro Shishigami
- Dark Lugiel
- Sougyoku
- Kirinmaru
- Seiji Matoba
- Kaiser (Armored Saurus)
- JJ
- Janos (The Black Heart)
- Hector Con Carne
- Stomach
- Boskov
- General Skarr
- Major Dr. Ghastly
- Darkonda
- The Tasmanian Devil
- Draco Malfoy
- Lucius Malfoy
- Narcissa Malfoy
- Admiral Zaza
- Katie (Waifu Fighter)
- Chun-Lan
- Fuuka (Waifu Fighter)
- Danielle Nikola
- Wummy
- Giff (Kamen Rider)
- Diablo (Kamen Rider)
- Beroba (Kamen Rider)
- Korath (Kamen Rider)
- Kaima Todoroki/Kamen Rider Seeker
- Rocky and Mugsy
- Nukus
- Richard Wong Chan
- Dark Pretty Cure
- Azrael (Blazblue)
- Amy Elliot-Dunne
- Mummymon
- Arukenimon
- Horribelle
- Vilor
- Amethio
- Conia
- Zir
- Dryden (Astonishia Story)
- Clive Portman
- Vineuvall
- Heckel
- Zerumo
- Ruby (Shaman King)
- Zaua (Shaman King)
- Megatron/Galvatron