Warner Bros Entertainment UK president Josh Berger has told VG247 that Rocksteady's future isn't likely to be solely bat-related, following the firm taking a majority shareholding the British developer yesterday.
"Going forward, we hope to have them work on other Warner Bros. intellectual properties," Berger said, speaking in an email interview.
Rocksteady achieved major success with Batman: Arkham Asylum on PS3, 360 and PC, and is currently working on a sequel.
Berger added that Warner had learnt through the success of Rocksteady's Batman title - which was published by Square Enix - that the core gamer has "extremely high standards".
He added: "We have been looking to increase our development capacity and, as a high quality development studio, Rocksteady is a great fit for that strategy.
"The acquisition of a majority stake in this leading games developer continues Warner Bros.' pattern as one of the industry's fastest growing games publishers."
Warner's move on Rocksteady is merely the latest in a string of acquisitions, which include TT Games in 2007 and Snowblind in 2009.
Warner has also bought the rights to Mortal Kombat from Midway.
Arkham Asylum 2 was announced at the VGAs last December. It was erroneously pegged for an October release recently; this turned out to be a Warner mistake.
The game has no ship date as yet.