Thugs

By far one of the most commonly encountered opponents for Adept, Thugs are simply ordinary humans who have taken up the life of crime. They usually work for a Crime Lord or something similar, or even a Supernatural on the side of the Darkness. 
Thugs are more of a nuisance than a threat, even in large numbers they are generally used by the enemy to soften up an Adept or Squad, or simply to keep the Good Guys delayed long enough for the Supernatural to make their escape. 
Thugs are usually armed with melee weapons, knives and probably a gun or two. If the Thug is anticipating trouble they will probably have access to more serious firepower. Most Thugs will probably have connections in the underworld, allowing them to procure contraband, weapons, get information and get out of town on a false ID if necessary.