"Fusion Rise! Arch Belial! Maga-Orochi! Ultraman Belial, MagaMaga-Arch Belial!"
- ―Transformation announcement via Riser
MagaMaga-Arch Belial (
Subtitle: Belial Fusion Monster (ベリアル融合獣 Beriaru Yūgō-jū)
- Paralleling Orb and Geed's similarity in their usage of past Ultras' powers, the similarities of MagaMaga-Arch Belial's components are as follows:
- Both managed to defeat an Ultra in their first battle.
- Both required a new form to be defeated, Ultimate Zero and Thunder Breastar respectively.
- Both are connected to Ultraman Belial; Arch Belial being a monstrous form of Belial, and Belial's Card being the final push to release Maga-Orochi.
- Both were created by absorbing a form of power; Kaiser Belial's emeralds and Maga-Orochi's fellow Lord Monsters and Ultraman Belial.
- Both possess the ability to drain their opponent's energies and launch their finisher beams from their mouth.
- Both are planet destroyers; Arch Belial's Arch Deathcium Ray can decimate an entire planet and Maga-Orochi feasted upon any planet it landed on.
- Both of their contributing defeats are due to a holy-powered materials; Arch Belial was destroyed by Ultimate Aegis and Maga-Orochi's adult form Magatano-Orochi is imperfect due to a sacred tree in Kamio Park.
- The kanji word "禍" ( Maga) means Misery, Destruction, or Calamity, with the second one is a repetition mark "々" for the previous kanji.
- Height: 81 m
- Weight: 100,000 t
- Origin: N/A
- Powers and Weapons
- Maga-Poison (マガポイズン Maga Poizun): As part of its normal attacks, MagaMaga-Arch Belial can launch a stream of dark energy from its palm.
- MagaMaga-Arch Deathcium (マガマガアークデスシウム Magamaga Āku Desushiumu): A combination of Arch Belial's Arch Deathcium Ray and Maga-Orochi's Maga Thunderclap, which is fired from his mouth.
- Maga-Kinesis (マガキネシス Maga Kineshisu) (Unused): According to Pega, MagaMaga-Arch Belial possess tremendous skill in the use of psychic waves, something that is either yet or not to be shown in the game.