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Star Wars: Battlefront II feature many new characters. In this sequel, Heroes/Villians are now playable. Also, there are new infantry units and vehicles, which include space combat vehicles.

On the Republic faction, there are eight infantry units. These include Clone Trooper, Heavy Trooper, Clone Engineer, Clone Sniper, Clone Commander, Jet Trooper, Clone Pilot (Space Only), and Clone Marine (Space Only). The Heroes that represent the Republic are Obi-Wan, Ki-adi-Mundi, Aalya Secura, Mace Windu, and Yoda.