Gudanna

• Spawned by the Field Parchment at E-8, with Chapter 4 Elite Training page key item, upon trading 20 Beastmen's Seals, up to 1000 gil, or an item up to level 50.
• It is possible Gudanna's job traits and buffs depend on the job combination of the user that spawned it. Gudanna will fight differently each time it is spawned.
• Physical attacks can cause additional effects of Poison, Blind, Drain, Enfire, Enblizzard, Enaero, Enwater, Enthunder or Plague.
• Absorbs one random element. Element absorbed doesn't seem to correspond with in-game day.
• Seems to be able to cast Various White Magic buffs and nukes, including Protect III and Banish II.
• Seems to cast Black Magic enfeebles depending on the day, casted Choke on Windsday.
• Will use a different abilities move depending on the day.
  • Recomend fighting on Lightsday, as it only uses Howl, very fast and easy fight then.
  • Uses only very weak Shock Wave on Windsday.
  • Used Howl and Thunderbolt on Iceday.
• Also will use Stun and the special ability Wild Horn.
• Can spawn with shadows (0-6?), but not always.
• Immune to Stun, even from Weapon Bash.
• Susceptible to Paralyze from Ice Spikes
• Very little delay inbetween attacks.
  • Can also triple attack.
  • Blade: Kamu significantly reduces his accuracy, and can make this fight much easier.
• Soloable by many jobs at 75.
• Use only 2 different abilities per fight.
• You can pop it once every 24 hours Earth time.

(see testimonials).

Gudanna translated from Sumerian means "attacker". This would fit this NM well being a Behemoth, they were used to attack the Allied Forces in the opening sequence of FFXI.