Despite being called "King" and obviously serving as an early powerhouse for Beast Decks, this monster usually appears in a humiliating position in the artworks it's featured in, being either scared or defeated by monsters that have less ATK.
This monster could be a reference to one of three great monsters of Middle-eastern mythology. Behemoth was the name of a massive mammalian monster that represented the earthly aspect of a trinity. Its first counterpart, Leviathan, the monstrous sea serpent dwelling in the oceans, could be considered to be "Levia-Dragon - Daedalus" or "Ocean Dragon Lord - Neo-Daedalus". The third counterpart has not been represented in the game yet and is known as Bar-Yuchnei or Ziz, an enormous griffin-like bird so massive its wingspan could eclipse the sun for miles on end.