Is there any pool that fits this?

Ditto: 'You need to remember trainer! Remember what they did to you! None of this is real!'

Is this a reference to something? a movie i haven't seen? a manga i haven't read? or maybe its just from that one scene from Robocop 2 where they have that criminals brain in that jar looking thing, but in that scene, that brain had eyes attached to it.

Doppio_Vin said in comment #2536064:

Is this a reference to something? a movie i haven't seen? a manga i haven't read? or maybe its just from that one scene from Robocop 2 where they have that criminals brain in that jar looking thing, but in that scene, that brain had eyes attached to it.

famous philosophical thought experiment https://en.wikipedia.org/wiki/Brain_in_a_vat