What is a person who intentionally commits acts to hurt or damage someone called?

A person who intentionally commits acts to hurt or damage someone is referred to as an offender. This term is used in law to denote individuals who have violated the law or committed crimes, including acts that cause harm to others. Offenders are held legally accountable for their actions, which may include physical, emotional, or financial harm to victims.

In contrast, the other terms do not apply to individuals who commit harmful acts. A victim is someone who suffers from the actions of an offender. A witness is a person who observes an event or crime and may provide testimony but does not necessarily have a role in committing harm. A defender typically refers to someone who protects or advocates for another person, particularly in a legal context, which is the opposite of the role played by an offender.