There are various roles that an RLSH may have. An RLSH may specialize in only one or two roles, or fill several depending on need.
Note: This list is not complete and can and will change over time.
Crime prevention in RLSH work takes various forms, ranging from Community Watch, grey-man patrols, or volunteering to help keep people safe during a protest. De-escalation, martial arts, and safety equipment are most commonly used in this role.
First Aid is seen as a very important role for any RLSH or team to have. It can mean the difference between literal life and death if someone is hurt. RLSH who do this have training in CPR, EMT, or other First Aid courses.
Hand to Hand Combat Specialist:
Most RLSH who do crime prevention know a martial art in some form, which is usually gained through professional training.
A lot of RLSH also do Private Investigating. They may or may not have a license, but having one is strongly recommended. It is very easy for an investigation to go wrong, and so this is a role that you must have adequate training to do properly.
This role often ties in with PI work. A researcher can make very good use of resources such as the Internet, books, or finding the right people in order to find needed information or intel.
See Oracle (role).
A driver is able to help get an RLSH or team where they need to go, and can also serve as backup. The vehicle may also be used to store food/supplies for outreaches, or more bulky First-Aid equipment.
Some RLSH teams make use of vehicles for mobile patrols. A driver in this case must be able to keep their focus on the road and being safe.
RLSH work can be stressful, and sometimes traumatic. RLSH who can not access professional therapy sometimes rely on peer support. It's important that a person who fills this role has a good understanding of mental health, as to not harm the person they are trying to help.
Some RLSH also work in suicide prevention, via hotlines, chatrooms, or in-person.
Some RLSH choose to use their gimmick to bring attention to various social issues, most notably homelessness.
Some who do homeless outreaches use cooked food. A cook must be able to create healthy food that meets nutrition and safety requirements for each need.