Elder God Demonbane OBD
The strongest Mecha in fiction :maybe

Name: Demonbane, Elder God Demonbane (name of version)
Pilot: Elder God versions of Al Azif and Kurou Daijuji (although the machine appears to have its own consciousness and can operate without anyone piloting it)
Origin: Demonbane
Powered By: Magic, Cor Leonis (that draws power from infinite universes), Shining Trapezohedron (which can draw out the Court of Azathoth)
Destructive Capacity: At least Multiverse level+ (supposedly defeated Azathoth and all the Outer Gods save for Yog Sothoth, can use the power of Azathoth in whatever the way it wishes), likely Megaversal (should be stronger than other forms of Demonbane which were defeated by Nyarlathotep)
Durability: At least Multiverse level+ via powerscaling, likely Megaversal (Nyarlathotep easily trolled weaker forms of Demonbane but was essentially helpless against this version of Demonbane)
Material: Unknown
Performance: Infinite speed via powerscaling (should be stronger than Demonbane (Gunshin Kyoushuu) that can exchange attacks with Mars Liber Legis under a femtosecond)
Terrain: Ground, air, water and space, super dimension (outside the fabric of the multiverse)
Notable Features: All abilities of Zanma Taisei and maybe Mars Demonbane, reality warping, dimensional and megaversal teleportation, can banish the target from the megaverse into a foreign dimension via Shining Trapezohedron, able to control Azathoth's power, can turn fantasy into reality, able to summon infinite x infinite variations of Demonbane from all the possible and impossible universes and perform a massive combined attack with them
Needed Prerequisite for Use: Being Kurou Daijuji and Al Azif that became Elder Gods (since Demonbane is more or less the extension of their power)
Weaponry:

  • Scimitar of Barzai
  • Cthugha
  • Ithaqua
  • Spell Helix
  • Atlach-Naacha
  • Mirror of Nitocris
  • Shantak
  • Timaeus and Critas
  • Lemuria Impact
  • Elder Sign
  • The Shinining Trapezohedron (the combined version, capable of unleashing the power of Azathoth)
Notable Attacks/Techniques:

All the abilities and techniques of Zanma Taisei Demonbane.

- Demonbane Athena Aetherum: Elder God Demonbane undoes the seal on Shining Trapezohedron, unleashing the power of Azathoth. This effectively works like a distress call, summoning infinite x infinite amount of Demonbanes from all the all the possible and impossible universes.

  • Lemuria Impact Ain Soph Aur: Infinite X Infinite number of Demonbanes use Lemuria Impact simultaneously to destroy the enemy. Each attack was noted to have the power of Big Bang.

Other: Fan translation of the Elder God ending from Kishin Hishou