5. Batman of Zur-En-Arrh
The Zur-En-Arrh concept has been around since the Silver Age, but Grant Morrison elevated the whole idea during his run, culminating in Batman R.I.P. with the full emergence of Batman of Zur-En-Arrh.
In order to become the ultimate hero, Batman has prepared for every scenario — even his own mind being wiped. Originally, Zur-En-Arrh was an alternate dimension, but Morrison flipped the idea and made an alternate version of the Dark Knight who would take over if Bruce’s mind was effected. Equipped with a shopping cart and a lead pope, this Batman is more brutal than any other version of the character. Dazed and confused, this version of the character will stop at nothing to take his enemies down until Bruce’s rational mind can be restored.