Dreams of a eunuch symbolize that you are feeling castrated and disempowerd. Keep in mind that no one can take your power away from you without your permission. See Victim.... Strangest Dream Explanations
Dreams of changing gender (for example, a girl dreams she is a boy) are very common. These other “selves” simply represent feelings or thoughts that come from a side of your personality that you regard as being “male” (or in a boy’s case, female). There in many characteristics that we associate with a particular gender, such as aggression being male.
It is normal and natural for this to be played out in your dream as you becoming the opposite gender. It helps you to explore or act out feelings, or burn off negative thoughts, that you would otherwise repress.... My Dream Interpretation
To see a Transgender in your dream implies that both the feminine and masculine side of your personality is in disarray. You may be reluctant to discover yourself.
Dreams of a transgender is about sexual expansion or confusion. Consider the feeling tone of this dream to discern its meaning for you. You are either embracing your opposite and/or dismissing or disowning your own sex. This dream can also be about the celebration of your of your opposite nature, feminine or masculine.