User blog comment:B214/Talk About What You Want! 2/@comment-16281343-20140604054041

I remember having a topic here about the [Monsters of the End] in the Bible.

Well, they all have appeared / mentioned in the series.
 * Leviathan - The original Leviathan, Katarea.
 * Behemoth - A servant of Serafall.
 * Ziz- Kidnapped Gasper and an obstacle in the sports day.

~Anyway, cheers!