What is a bias wrecker?

A bias wrecker is a K-pop term that refers to a member of a group who challenges or threatens the position of someone's bias (favorite member). A bias wrecker can be someone who consistently catches the attention of fans with their talent, visuals, personality, or stage presence, causing them to question their loyalty to their original bias. Bias wreckers often have the ability to captivate fans and make them reconsider who their ultimate bias is within a group. Ultimately, bias wreckers add excitement and unpredictability to the fan experience by creating internal conflicts and dilemmas among fans.