Originally, Taddl (who was one of the protagonists in the first movie) was not supposed to be part of "#FinalClash", because his real life counterpart quit YouTube in 2015 to become part of the music group Dat Adam. However, just before the third season of the web series started, he uploaded a video to his channel, qualifying him as a YouTuber again.
Just like the first two movies, production of "#FinalClash" relied on interaction with YouTube users. Comments containing jokes or story suggestions were integrated into the plot, and users could vote on which of the three new YouTuber they wanted to die first. Since there are only three new YouTubers (compared to ten in the first and second seasons) each of them now had three lives.
Before production began, users could suggest and vote who should be the three new YouTubers. While in the first two seasons all of the protagonists were well known and much subscribed, only YouTubers with less than 150000 subscribers were allowed this time.
When running away from the zombie wookies, Gronkh mishears a line from another clasher, and says "Bibi überholt mich!?" ("Bibi surpasses me!?") in a surprised manner. This is a reference to the fact that at the time of the release of the third season of "#TubeClash", the channel BibisBeautyPalace came closer and closer to Gronkh in the number of subscribers. Gronkh was the most subscribed German YouTube channel by a single person and the second most subscribed German YouTube channel at that time.
Out of all protagonists from every installment of the saga, Mii Mii (based on a well known German YouTuber and appearing in every episode of the third season) is the only protagonist that was never able to be voted on at any point of the story.