W0LF(S) (Chinese: 五堅情; pinyin: wǔ jiān qíng; formerly W0LF) is a Taiwanese boy band formed in 2019.

On November 6, 2019, during the live broadcast of "100% Entertainment", Qiu Fengze, Nine Chen and Wayne Huang announced that they would form a four-member group with Lai.

[7] In May 2021, the band released their third single I Wanna Holiday[8] in partnership with Agoda, followed by a song amid the global COVID-19 pandemic titled No Boundaries[9] in September 2021.

They also sang the 5th anniversary theme song for Arena of Valor titled Ride On[10] which was released on 29 October 2021.

[15] The members began conceptualising their new Extended play (EP) ROYAL[16] which consisted of 3 songs in July 2023.