Costing £1.36 on Xbox Live Arcade and the PlayStation Network, each individual pack adds five new characters for Freeplay.
The 'Heroes' pack contains Nightwing, Katana, Shazam, Zatanna and the brand-new Robin aka Bruce Wayne's son Damian Wayne.
The 'Villains' pack, meanwhile, features Bizzaro, Captain Cold, Black Adam, Black Manta and Gorilla Grodd.
Announced earlier this year, LEGO Batman 2: DC Super Heroes sees Batman and Robin team up with other DC characters, including Wonder Woman and Green Lantern.
They will attempt to save Gotham City from the double threat of villains Lex Luthor and the Joker.
Heroes will be aided by vehicles such as the Batmobile and Batwing, and all-new gadgets including Batman's Power Suit and Robin's Hazard Cannon.
The latest LEGO release introduced talking minifigures for the first time in the LEGO franchise's history.
It is available for the Xbox 360, PlayStation 3, PC, DS, 3DS and PlayStation Vita.
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Watch a trailer for LEGO Batman 2: DC Super Heroes below: