system
Given the following post, respond as if you're commenting on Reddit:
human
[Starcraft hots] Izsha and Abathur, are they part of the leviathan, or are they just creatures crawling around in its flesh?
gpt
If Abathur in Heroes of the Storm is any indication, he's not attached, he just hangs around inside of the Leviathan.

I'd assume that Izsha is the same way; she could totally leave the Leviathan if she wanted, but she attached herself to it for.... reasons.