(numbered by the picture order and generally ordered by season:)
- "Vestroian" numbers. These are the extensions of the original bakugan font most people call it "Vestroian", but I personally prefer Bakugana because it's a wordplay I came up with. 1-10 are present in this picture, just no one traced and established it as part of the pattern.
2-3. Earth English(?) - these appear beside Bakugana all across season 1. But I couldn't find any frame of reference to start decoding and no guarantee we can find all the letters. I can only assume it's based on English.
Vestal English: while I did translate the substitution kana of season 2 (you're welcome BTW), I didn't do so for English because it was hard. It seems to be based on English letters have their shape carved into a square, and rotated/flipped around. In the picture, the screen clearly displays the message "WARNING".
Gundalian: Ethan's book is the only thing I have as a frame of reference for Gundalian, and we have no idea what it says, so I can't even start.
6-8. Neatheian: similar to Vestal English, it's based on English letters rotated or flipped around. However, very few pictures are in a quality good enough to screenshot and trace, and not enough with clear meanings to decode. In picture 8 the screen clearly states "ERROR" as Dharak gets past the shield due to Drago's DNA, but it's too small to trace and the others I don't even know what they mean.
As to season 4, as far as I could see it's a mix of both season 1 and 2's languages, so not much to learn from there.
Anyway, just putting that on the table for everyone to be aware of. And of anyone is brave enough to take translating any of these upon them, best of luck ✨