In fact, the actors shared a "magical" bromance while filming the upcoming flick.
"I braided his hair!" Hammer joked with us at last night's Artios Awards in Beverly Hills. "That was so nice. We would stay up talking till the sunrise. It was the most magical experience."
As for all that horse riding, Hammer definitely felt the burn on his bum, as well as other places.
"There were tons of injuries," the hunky 26-year-old actor admitted. "For me personally, just bumps and bruises and cuts and nicks and stuff like that. Nothing that a good Epsom salt bath wouldn't fix."
"They both definitely wear a mask," he laughed, adding, "There's no similarity in story, but in terms of a masked hero, a vigilante, those lines you can draw."