Rogues are as different from each other as they are from all the other classes. They excel in learning a great deal about the world, especially about where its best hiding places are, its best treasure is kept, and its weak points. A rogue can move without being heard, hide without being seen, take what doesn’t want to be taken, and cause pain where it is felt most.
Rogues are not necessarily all thieves, although many of their abilities assist with liberating goods from their owners. Often times rogues are used as forward scouts, troubleshooters, and anti-thieves to prevent items from being stolen.
Rogues follow the rules set out for them in the 2nd edition Players Handbook.