The Behemoth King is an optional boss in Crisis Core -Final Fantasy VII-. It is encountered near the end of the game, in the area after Zack goes down the hole in Banora Village. The player must find the Goddess Keys in Cage of Binding to enable access to Howling Fang.
Behemoth King will most likely use its Gyro Tail attack to counter Zack, and sometimes it will cast Quake or attack with the powerful Comet Blast. These attacks are unavoidable, but should not be too much problem if Zack has high Spirit stats.
The player should casts Wall and Regen and position behind the Behemoth to land critical hits. Due to the small landscape, positioning Zack might be difficult. Tri-Thundaga and similar powerful spells are also useful. Another strategy is using Graviga seven or eight times to get the Behemoth King's health low enough so a regular sword slash to kill it.
Behemoth is a beast mentioned in Job 40:15–24. In addition to mythological creatures, it is likened to elephants, hippos, rhinos, and bison. Metaphorically, the term behemoth denotes "an extremely large or powerful entity."