Considering what we learnt about GA in 3.3 and their DEDICATION to the role...
What if GA is REALLY Luuk's father, but denied knowing him because:
Spelling this in Nivora's form is too cringe even for them
They took a page from Vergil's book and avoid paying child dupport
Reason 2, but there are also other kids - GA is long lived, after all
Gosh, 6.6 made me really want to finally make this versus in a thread aside from just gushing how Nahida is the best thing on Teyvat to face Leviathan head-on
R1: Formless Leviathan in dream realm, playing game of tug during Samsara. It REALLY wishes to assimilate Nahida first before going on rampage
R2: Lady of the Sea Leviathan caught Sumeru in its own loop of destruction, Nahida launches the counter-offensive
R3: Fleurdelys!Leviathan replaces main antagonist of 6.6.
Bonus round: They debate over valueless of human life freedom of wills and concept of Paradise
Round 1: Three Hopes Rhea (starts in human form) vs Fenrico without Leviathan's Gem (still has the lantern)
Round 2: Crimson Flower Rhea vs Deliverance of the Deep Fenrico
Bonus round: Who is 'better' leader in their respective circumstances? Both started as highly regarded authority figures, fought secret wars in shadows and were going hard on dissenters, while also slowly falling to corruption.