Season 5 of What We in the Shadows provides Guillermo with his greatest test yet. He's trying to adapt to his new life as a vampire, but there are some problems. His physiology hasn't fully adapted, plus he has to ensure Nandor isn't offended and driven to kill him for being bitten by another.
Source:https://www.cbr.com/what-we-do-in-the-shadows-guillermo-vampire-regret-family-feud/