Faction plays a large role in Zenless Zone Zero as it dictates how some Agents synergize with each other and get stronger through their Additional Ability. This is why characters like Soldier 11 in ZZZ suffer when she's released as the only Agent from her faction, the Obol Squad. Similarly, Zhu Yuan used to have no one else from her faction when she was released in version 1.0, but HoYoverse quickly gave her company with the release of Qingyi.