There are many kinds of assassins. Some are specialists at killing from a distance, although because of the inherent uncertainties in this approach, such characters are just as often scouts or guards as they are assassins. Courtiers and courtesans prefer a more subtle approach. Sometimes, however, nothing can substitute for a knife in the back at an opportune time, and this is the shadow stalker's niche.

Most shadow stalkers work as part of a team. Although they may have lethal skills, they still need backup to carry out their task, and to make their escape afterwards. A shadow stalker who is cornered and unable to escape usually risks death; few authorities are willing to show mercy to an assassin.

As with most assassins, shadow stalkers are often called evil, whether or not this is actually warranted. Many of the most infamous shadow stalkers serve evil masters, but even more benign characters or organisations often find a need for their skills. Nevertheless, the occupation of a hired killer demands a certain cold-bloodedness, and all shadow stalkers are nothing if not ruthless when the time comes