For purposes of this article:
"Victim" does not include a person who is the subject of an investigation for, charged with, or has been convicted of the offense in question; a person, including a spouse, parent, child, or lawful representative, who is acting on behalf of a suspect, juvenile offender, or defendant, unless such actions are required by law; or a person who was imprisoned or engaged in an illegal act at the time of the offense.
S.C. Code § 16-3-1900