All-New Batman: Brave and the Bold #3
an issue of All-New Batman: Brave and the Bold by DC Comics
Issue description
The Mad Hatter and Mirror Master team up to drag Batman and The Flash 'Through the Looking Glass'! Trapped in a wacky Wonderland filled with white rabbits and Cheshire cats, the heroes have to battle past the pair of villains - and a fearsome Jabberwock - to find their way back to the real world.