Leviathan

Leviathan is a... nobody's quite sure, really. She pops in from time to time to make nasty, not-quite-relevant comments. Enthalpy, the GM for Turnabout of the Elements, has suggested that she may be trolling.

Source Material
Leviathan was a Biblical sea monster described in the book of Job, which Jewish tradition said would be slain by God. Christian tradition elevated Leviathan to a Prince of Hell, and a demon representing envy. In Umineko (from which this incarnation of Leviathan hails), Leviathan is one of the "Stakes of Purgatory," a group of demons which serve Beatrice. Leviathan there is deeply envious of everyone, and actually draws her power from this envy. She, like her sisters, also has a fascination with transforming into a projectile and stabbing people.

Relevance to Elements
Unknown. Quite possibly none. Enthalpy has gone on record as saying her involvement in Elements originated with a misunderstood April Fools' Joke suggestion by spd.

Transcript
Before cross-examination five.

Leviathan (Frustrated): This... trial is still going on?! I'm not sure whether to call that an accomplishment or not. Probably not. Leviathan (Confident/Insecure): This is serious, I hope you know. This could possibly be the final cross-examination, not of the day, but of the game. You trust me, like the judge, right? If not, I could get jealous. Leviathan (Aggressive/Nervous):  Well, the time is fast approaching. Prepare for the beginning of the end! ...That's where you are, after all. Enthalpy: Leviathan does not represent Enthalpy or the administration of Turnabout of the Elements. She represents Beatrice-sama, who may or may not have learned the ending by magic, and who may or may not have her own agenda.