While "Good Behavior" primarily revolves around its main cast, there have been some notable guest appearances throughout the series. However, it's important to note that the show may not have had as many high-profile guest stars compared to other well-known TV shows. Some guest appearances in the series could include actors known for their work in various film and television projects. However, as of my knowledge cutoff date in September 2021, specific details about guest stars and their appearances in "Good Behavior" might not be as well-documented compared to more prominent shows.
If you're interested in learning about any specific guest appearances in the show, I recommend checking official show resources, fan websites, or entertainment news outlets for up-to-date information.