In the horror game Five Nights at Freddy’s, Purple Man (also known as Purple Guy or The Murderer) is thought to be a security guard who murdered five children at Freddy Fazbear’s Pizza. He makes mysterious appearances during the minigames.
Barney Calhoun is a playable character in Half-Life: Blue Shift, and a major character in Half-Life 2 as well as Episode One. Starting out as a security guard at Black Mesa Research Facility, he eventually joins the Lambda Resistance and works as a mole in the Combine Civil Protection Forces.
In Unbreakable, David Dunn (Bruce Willis) is a security guard who realizes that he has super powers after he’s the only one to survive a train wreck. And like in most M. Night Shyamalan movies, his kryptonite is the most common of substances: water. His poncho reads “FSU” (for Franklin State University) in yellow letters on the front, and “Security” on the back.