More SU thoughts:
While Lapis may be more powerful than Leviathan in terms of hydrokinesis, I do still think Leviathan would win if it were between the two of them, at least if Lapis didn’t fly way out of reach quickly enough. Lapis is a glass cannon while Leviathan is practically invincible, and even if Lapis is immune to water attacks (unknown), Leviathan has attacks that don’t use the water, like using his claws or tail. Lapis, on the other hand, doesn’t have much in terms of non-watery attacks besides using water to levitate objects above a target and letting gravity do the rest – as far as we know, anyway.
However, if anyone can contain Leviathan, it’s probably Lapis. She has displayed the ability to keep people trapped in levitating bubbles of water (though Leviathan’s swimming speed might mess with that), and she has the power to make a city-sized one if she cares to. She can also make chains out of hardened water, which can be quite effective. She’d need to find a permanent place for him or keep sustaining these restraints, though. Maybe she could make him a little lake on a different planet?
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