|Delta "Tabou" Lantanoil|
|First Appearance||Ciel nosurge: Ushinawareta Hoshi e Sasagu Uta|
In Ar nosurge he is a grown man that used to be part of the PLASMA special forces team until an incident that took place about half a year prior to the game's story caused him to be fired. He runs a small restaurant in Felion called "Cook de Delta".
While he is quite headstrong and stubborn, lacking also in discernment and tact in many occasions, his bravery and determination are second to no one. He also feels very strongly about his childhood friend Casty Riernoit, and will go to end in order to protect her.
- On the Viva☆Sports costume description it says Delta doesn't have any interests in sports despite wearing sportswear all the time at home.