User blog comment:Blaziken rjcf/Why God created the Leviathans/@comment-1975828-20160614103644/@comment-34326521-20160614110543

Not so much in memory of his sister, but as a proxy for her. It'd also explain why he locked them away, then left instructions on how to kill them, instead of just killing them and be done with it.

He locked his sister away because, as he put it, the world needed to be born, and she wouldn't let him (spoiled brat, mirite?). He also tried to show her that creation was good.

I think he's somewhat compassionate, but he's also arrogant, prideful, and egocentric. He'd rather the world burn than admit fault.