|This article is about a/an group of monsters in Kamen Rider Decade.|
Heroes of Evil (悪の勇者 Aku no Yūsha) was how Super Apollo Geist addressed a gathering of fallen monsters from the Nine Worlds which he had revived through a surplus of Life Energy which he had gained during his wedding to the Fangire Yuki, which transformed him to a 'Super' half-Fangire form. Consisting of various monsters from six different monster groups, they were subsequently combined into the strongest of their respective groups. These six strongest monsters were destroyed by Kamen Riders Decade, Diend, Kuuga, Kiva, and Hibiki.
- Phylloxera Worm (フィロキセラワーム Firokisera Wāmu): Created by combining Worms. The Phylloxera Worm is destroyed by Diend's Blue Strike.
- Tiger Orphnoch (タイガーオルフェノク Taigā Orufenoku): Created by combining Orphnoch. The Tiger Orphnoch is destroyed by Decade Complete Form's Enhanced Dimension Kick.
- Paradoxa Undead (パラドキサアンデッド Paradokisa Andeddo): Created by combining Undead. The Paradoxa Undead is destroyed by Kiva.
- Beetle Fangire (ビートルファンガイア Bītoru Fangaia): Created by combining Fangires. The Beetle Fangire is destroyed by Kuuga's Mighty Kick.
- Buffalo Lord Taurus Ballista (バッファローロード タウルス・バリスタ Baffarō Rōdo Taurusu Barisuta): Created by combining Lords. The Buffalo Lord is destroyed by Hibiki.
- Alligator Imagin (アリゲーターイマジン Arigētā Imajin): Created by combining Imagin. The Alligator Imagin is destroyed by Decade Complete Form's Enhanced Dimension Kick.
- The six monsters that were summoned are all unique monsters that Tsukasa took on during his quest to save the Nine Worlds. Three are notably absent.