The July 2022 Scorched Sky Celebration has introduced a new set of Overseer Agents. Please note that these appear at the BOTTOM of your Agent listing.
Here's a checklist for your reference:
Elite (Purple): 1**
Avatar of Solusek Ro
Rare (Blue): 1**
Uncommon (Green): 1**
Char the Burnt
Common (Grey): 9**
Seeker of Ro
Soldier of Fire
Scorched Sky agents are available for purchase via the Marketplace under the listing:
They may be also other ways to gain access to them including missions for the celebration and via the overseer process itself - there are new recruitment missions that will offer the new agents as well. Unlike previous new agent releases, you cannot obtain these by converting existing agents.
** Information still in the process of gathering, this may be an incomplete list.