As believable as this may seem, Batman never did join Motorhead. I know, it seems like a perfect fit and Lemmy probably would have jumped at the chance, but nope, this cover belongs to a series known as Great Comics That Never Happened.
In the fictional series “The Brave and the Bold,” issue number 124, Batman decides he is sick of the Justice League ways and joins hands with his new partners, none other than Lemmy, Mikkey Dee and Phil Campbell.