Zhu Yuan is an S-Rank Agent in Zenless Zone Zero, featured in the Unswerving Bullet banner. She serves as a Public Security Officer, known for her dependability and readiness to handle surprises. Trust events with her occur at locations like Sixth Street and Lumina Square, often in the morning, where choices like praising her gardening skills increase trust. Her banner rerun was in Version 1.6 Phase 2 alongside Lucy and Billy.