Shinryu

Shinryu, also translated as Lord Dragon or Nova Dragon, is a recurring boss in the Final Fantasy series, and one of the hardest superbosses. Shinryu is associated with the powerful weapon Ragnarok, and sometimes drops it after being defeated. It is sometimes presented as a counterpart to another superboss, Omega. Shinryu has appeared as a summon, but he cannot be summoned by the player.