In the Leviathan, the order of your characters' positions and traits, line up with some mystical archetypes. Zegara standing to the left of Kerrigan and Izsha to the right, including Kerrigan in the middle, represent the Three Fates in Greek Mythology - Clotho, Arthropo, and Lachesis.
Also known as the 3 phases of the moon : The Crone(Zegara), The Mother(Kerrigan), and The Maiden(Izsha). Their personalities are also fitting to those descriptions.
On the Left side, is Dehaka, which symbolizes the Left-Hand-Path. He represents Survival of the Fittest. Kill or be killed, somewhat Satanic ancient reptilian nature. On the Right side is Stukov, which represents the Right-Hand-Path. Humans who are enlightened and righteous, "half man, half god" and half monster. And then Abathur is a mad scientist, haha.
What do you think? Discuss. :D