When Geralt visited the family's crypt, he was one of several family members to appear as a ghost, demanding to know why Geralt wanted to see Vlodimir. He and the rest ended up attacking the witcher after wrongly assuming Geralt had obtained Everec blood by killing the last living member.
- There's a bug where his and Ernest's ghost models are switched around during the fight, making it all the more strange when Kestatis appears to address himself in the cutscene beforehand.
- Most of von Everec family members are references to Lithuanian Grand Dukes, Kestatis is a reference to Medieval ruler of Lithuania - Kęstutis. He was a brother of Olgierd (Algirdas) and father of Witold (Vytautas).