Hardy explained that playing the villainous Bane to Bale's Batman was one of the most rewarding experiences of his professional life.
"[Christian is] wonderful. I love him," the actor declared to The Hollywood Reporter.
Hardy also said he would jump at the chance to work with Bale again in a totally new context.
"He's a proper, proper actor and I'd love to work with him again. Something where he can hear me and I can see what he's saying," the star joked in reference to his and Bale's Dark Knight Rises masks.
Bale also recently praised Hardy's performance in The Dark Knight Rises, calling him a "phenomenal actor".
The Dark Knight Rises opens on Friday (July 20) in cinemas worldwide. Watch a trailer below:
Photo gallery - The Dark Knight Rises UK premiere:
Copyright: PA Images Lewis Whyld/PA Wire