Tina

On December 31, 2023, Tina (then known as Kittie) was confirmed as a contestant on the reality survival show Chuang Asia Thailand during Thai shopping mall Icon Siam's Amazing Thailand Countdown 2024. On March 2, 2024 she was eliminated in episode 5 after ranking 42nd place. She left her company XTS sometime in late 2025 and went to train under High Up Entertainment.

On March 27, 2026, UNCHILD was spotted filming content in Gyeongju World Museum, and fans quickly identified the group's members (including Kittie). A week later, on April 7, she was officially introduced as a member, using the stage name Tina. UNCHILD will debut on April 21, 2026, with their first single album "We Are UNCHILD".