Everyone was measured from ground height. Four Kings have legs below the ground that keep fading the further down you go. It's hard to tell where exactly they end, but it's somewhere around 8 m below ground.
Soulstruct by Grimrukh:
https://github.com/Grimrukh/soulstruct
Dark Souls Remastered - Debug Menu:
https://www.nexusmods.com/darksoulsre...
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