大脑

大 = 一 + 人 : The big (大), huge (大) robot (mnemonic symbol for 大) is working out in the ashram's bathroom (a4). He's lifting a flute (一) to which Don Quixote (d) and Neanderthal man (人) are clinging.

脑 = 亠 + 凶 + 月 : Napoleon and the moon lost their minds in the aorta and put their brains in the middle of the room. Now they're dancing around their brains in a weird ceremony. The moon put on a vicious demon mask and Napoleon is wearing a way too large beret while they dance around their brains.