Gender is not only a spectrum; it is a complex number. Each individual has their own unique multidimensional number of gender. Gender as a complex number has developed from the gender algorithm. This conceptualization of gender is seated in theorizing gender from a Bayesian brain foundation, specifically the Free Energy Principle. The phenomenon of phantoms in transgender, transsexual, and nonbinary (TGNB) people has only recently been a subject of inquiry. This article builds on ideas developed through clinical practice and harvested from multidisciplinary theory and research. It applies my theories of interoceptive gender and the gender algorithm to formulations of gender. It will demonstrate how these relate to the theory of trans phantoms, which has important clinical implications and applications for TGNB subjectivity and embodiment.