Derumaiosu, also known as the Delmaios [1], is a large Bird Wyvern that has only been featured in the MH Orage manga. Its body resembles that of a falcon or eagle. It forms a petrifying saliva that it can throw at enemies and has a breath that crystalizes its enemies into glass or dulls your weapons immediatly. [2].


  • It has thin and fleshy skin on the throat area, making it its most weak spot. Huge damage is done to this area with Pierce bullets from a Bowgun [3].
  • The materials of the Delmaios are dark and glittery [4].


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