Batman and Fearless Dawn by Steve Mannion

Batman and Fearless Dawn teaming up against Helga riding a T-Rex.
Pencilled and inked by Fearless Dawn creator Steve Mannion.

Batman and Rorschach/Nite Owl by Silvio dB

Batman hitches a ride on the Owlship. Pencilled and inked by Silvio dB.

Batman and Sherlock Holmes by Silvio dB

Two detectives having 'fun'. Pencilled and inked by Silvio dB (here's his deviantart page).