Final Fantasy XV Leviathan was assumed to be one of Noctis summons. Noctis has most of the power in the game as we saw in the demo we he see summoned Ramhu yet Hajime says that he will not be summoning Leviathan. The E3 trailer from 2014 shows a bit of water summons in action. This also goes with the female guest character. A while back in one of many interviews Tabata mentioned that their might be a female guest character. Still no word on who this guest character is or if Leviathan summons at her disposal. If I hear anything I will let you.
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