Answer:
The queer theorist goes by Judith Butler.
Explanation:
Judith Butler remains one of the critical writers and influentials in the field of Queer Studies. In his book, Gender Trouble: Feminism and subversion of identity, and several of his writings, Butler challenges that gender is natural by claiming that gender is performed through a set of repeated actions within a highly rigid regulatory frame that congeal over time to produce the appearance of substance of a natural sort of being.
With this foremost interventionism, Butler lays the foundation of providing requisite perspective into gender issues, feminism, and other controversial gender specific issues - gay, homosexuality, and et al.