- Cross-Dressing Voices: Sadly averted with every single child in Eternal Wings. The actors don't even try to disguise their age. Thankfully played straight with Origins.
- Fan Nickname:
- The Angel of Darkness for Kalas, post FaceHeel Turn.
- The Godcraft for Past!Guillo.
- The Chaotic Trio for Giacomo, Ayme, and Folon.
- Name's the Same: Wiseman shares his name with, well, Wiseman from Xenogears. Perhaps this was intentional, as the games share some of the same staff.
- No Export for You: Baten Kaitos Origins was never released in PAL regions.
- The Other Darrin: Compare the voices in the original trailer to the voices in the finished product.
- Vaporware: A sequel for the Nintendo DS was announced, but never materialized. Years later it was confirmed to have been cancelled.
- What Could Have Been: The DS sequel that was never meant to be.
Trivia / Baten Kaitos