"Guillermo," played by Harvey Guillén, is Nandor’s human familiar and has wanted to be a vampire since he was a kid. He does chores around the house and keeps the vampires in human blood but this part of the job has started to wear on him since finding out that he is a distant relative of Van Helsing, the famous vampire hunter. He loves his master but doubts are creeping in. Plus he can’t seem to stop accidentally killing vampires.
Guillén’s acting journey began as a six-year-old watching Annie on TV. He ran over to his mother and said, "I want to be that! I want to be an orphan!" Confused, his mother then explained that those kids were just actors. Guillén’s mother told him in order to be an actor, it would take a lot of money for training - money the financially struggling family did not have. Soon after, Guillén became inspired by a man collecting recyclables out of trash cans to sell to the local recycling center and would go on to do the exact same in order to save for his first acting classes.
Guillén has been a series regular on MTV's Eye Candy and ABC Family's Huge. He guest starred in the Apple series Little America, HBO's Room 104 and Don’t Look Too Deep directed by Catherine Hardwick. He also served as a recurring guest star on season three of NBC's The Good Place and Nickelodeon's The Thundermans. As for his film credits, he is best known for his supporting role alongside Vince Vaughn, Rose Byrne and Owen Wilson in The Internship in addition to Netflix's horror film Truth or Dare. Guillén is the recipient of a GLAAD Award for his work on Raising Hope and produced the award-winning LGBTQ+ web series The Filth.