Ivan Bakunas

"Like I'm the only guy in town who likes cracking open a cold one."

Ivan Bakunas was a suspect for the murders commited by Roderick Gless.

Background
Ivan was a necrophile who studied at the Evergreen State University before being expelled for sexually assaulting his girlfriend; he slipped her tranquilizers and had sex with her while she slept, presumably in order to recreate the sensation of having sex with a dead body. Despite this incident, he was later able to get a job as Medical Technician at the Pierce County Medical Examiner sometime after college, but was eventually fired for paying an unhealthy amount of attention to the female cadavers. After that, he went back to living with his mother, not holding down a single job. At some point, a friend of his informed him that the body of Sunny Rain, a local weathergirl and celebrity who had died in a car accident, had arrived. Ivan then had him steal the pair of shoes from her personal possessions so he could put them on female cadavers in the morgue along with a blonde wig and have sex with them.

Cold Comfort
The BAU learned of Ivan when they were called in to help catch necrophilic serial killer Roderick Gless and asked local mortuaries for potential suspects. They went to his house to speak to him and asked for his DNA so they could compare it to the semen found on the bodies, but he refused. The lead detective considered him a very good suspect, but the BAU argued that the killer used expensive embalming equipment and needed a lot of space to work in, neither of which Ivan had access to. Despite this, Ivan was still brought in for interrogating when he tried to cross the border. He denied killing or having any involvment with any murders, but confessed to being a necrophile, remarking that many would argue that it is a victimless crime. When he revealed that he put Sunny Rain's shoes on the bodies he had sex with because they were "the genuine article", it gave the BAU the lead they needed to solve the case. Ivan isn't seen for the rest of the episode, but since practising necrophilia is a felony in Washington, he was most likely arrested.