I could be mistaken but I think he has been introduced as a headliner. Pretty much anyone who is not a lead performer or Tobi Roppo and holds a position of importance is a headliner in beast pirates.
![](https://i.imgur.com/eOhUvjn.png)
Even in the character pages for the volumes he is not with the headliners.
![](https://i.imgur.com/cLlH5Hq.png)