Each of these classes comes with a possible specialization in Mass Effect and Mass Effect 2, and all of them include a set of powers to choose from when players build their Commander.
Otherwise, they can choose Vanguard for Biotics and Combat, Sentinel for Tech and Biotics, and Infiltrator for Tech and Combat. Players can choose from Adept, Soldier, or Engineer if they want to be a pure Biotic, Combat, or Tech specialist, respectively. Each class allows Shepard to be a specialist in Biotics, Combat, Tech, or some combination of two of these. Across the entire Mass Effect trilogy, players will have the opportunity to select a class for their Commander Shepard from the six available options.
