Ольга Сирина и Олег Вирозуб

In 1x01, there are traces of the possibility that the voice cast in the Russian dub was going to be different. In this dub, Mitzy is mostly voiced by Iva Solonitsyna (Flora’s VA), who has been her most consistent voice until the later seasons came along (although, I have to admit, she sounds awful lot like Flora in this exact episode, lol... well, they were still adjusting to the characters, so that’s understandable). And she doesn’t even have that many lines in 1x01, however, one standalone line, which appears much later in this episode, is voiced by a different voice actress - Olga Sirina. There’s a chance that she might’ve been an initial pick for this and who knows how many other characters, but was eventually replaced during the recording process. This might’ve as well been a case of the line missed by Iva and recorded last second by Olga, just because Iva and other casted VAs couldn’t do it, as this practice has become quite common in the Russian dub of the later seasons, but I don’t think this could’ve happened that early into production. It’s more likely that they forgot to replace an initially recorded line. The only other place Olga appears in this dub is the ending song, where she shouts some lines inbetween the parts of the song performed by the permanent vocalist of the Russian dub, Ekaterina Semenova. So, in a sense, she appears constantly, as the ending is present in every single episode (however, her lines were removed in the renewed ending of Season 2). This only goes to prove that she was going to be a consistent part of the main cast before getting replaced for some unknown reason. Also, in this episode only, Sky and Brandon are voiced by Oleg Virozub, and it isn’t just one line, it is all of the lines of these two. It means that initially the Russian dub was going to have two male VAs instead of just one - Denis Bespaly, who ended up voicing all the male characters in the show during the first four seasons. Oleg, in turn, is gone entirely after 1x01, and the next time Sky/Brandon appear, which is in 1x03, they are already voiced by Denis as well.