Since first appearing on Season 5 of 90 Day Fiancé, Elizabeth “Libby” Potthast and her husband Andrei Castravet have become known to fans of TLC’s hit reality television franchise for their international relationship. At the same time, the couple’s occasionally tumultuous relationship with Libby’s relatives has also drawn the spotlight on the Potthast family.
From Libby’s father and family patriarch Chuck to Libby’s feisty brother Charlie (not to mention Libby’s acting career!), viewers of 90 Day Fiancé might think they’ve learned everything about the Potthasts, including their criminal records. We can’t forget to mention Libby’s two sisters, Becky and Jenn, here, but you might be surprised to learn that Libby actually has a fourth sibling — another brother — who managed to fly under the radar by has chosen not to appear in front of the camera with her family members in the popular reality series and its spinoffs.
His name is Mike Potthast
In an Instagram post posted by Elizabeth “Libby” Potthast’s father, Chuck, the family patriarch can be seen alongside a younger man who is similarly dressed, height and build. In the caption, the younger man is identified as Mike, Chuck’s other son (and Libby’s brother).
ScreenRant dug up some publicly available information about Mike (at the time) and found that the additional sibling is a graduate of both the University of North Carolina at Charlotte and the University of Southern Florida. The outlet also noted that he was a member of the Sigma Tau fraternity and is a 2019 graduate of the Vinik Sports & Entertainment Management Program from USF’s Muma College of Business.
As fans may know, Chuck works in real estate. It appears that Mike has followed in his father’s footsteps, as his LinkedIn notes that he is a licensed real estate agent working under Keller Williams in Tampa (which is also where Libby and husband Andrei reside). He also has experience working for the PGA TOUR and minor league baseball.
He seems close to his father
From her public social media accounts (where her posts typically focus on herself, her husband, and their daughter), it’s not apparent what relationship Elizabeth “Libby” Potthast has with her brother, Mike. However, her father Chuck has posted additional photos on Instagram tagging Mike since the first photo he posted identifying Mike, including a snap showing the father-son duo smiling side-by-side while they wear Tampa Bay Buccaneers football jerseys.
In the first photo of Mike that Chuck posted to Instagram, Mike appears to be a Tampa Bay Rays fan as he is wearing a t-shirt with the baseball team’s “TB” logo on it. Additionally, the family patriarch’s Instagram has also featured photos of his support for Tampa Bay-based sports teams, including the Buccaneers and the Rays.
It’s clear that Libby’s second brother isn’t as distant as his absence from television might suggest, and that he would prefer not to jeopardize his relationship with his family by appearing on TLC.