Four Fiends (Final Fantasy)

The Four Fiends are the primary bosses in Final Fantasy I. Lich is the fiend of Earth, Kary (a.k.a. Marilith) is the fiend of Fire, Kraken is the fiend of Water, and Tiamat is the fiend of Wind. The Four Fiends are in an alliance with Garland, helping him maintain the time loop. Each fiend must be defeated twice by the Warriors of Light, first at that fiend's elemental dungeon, and then at the Temple of Fiends, 2000 years in the past.