Is it even a mecha?
If anything, it's more like a mecha piloting a person.
It's an energy construct.
>>14596163
This really.
It is an enemy that would lose to Aquarion Logos Genesis
It's a giant manifestation of spiral energy more than anything.
>>14596163
It's a thought inside the collective mind of the whole gurren squad (and/or the antispiral's one, can't really remember), so not really a mecha