A pansexual could be open to someone who is male, female, transgender, intersex, or agendered/genderqueer. 
Pansexuality, often shortened to pans, is the opposite of asexuality. The word comes from the prefix "pan-", Greek, meaning "all." Pansexuality or gender-blindness is the attraction to or willingness to have a sexual relationship with someone regardless of their sex or gender-identity, arguing that gender is a social construct. This is different than bisexuality because it includes people that do not fall on the gender binary. It is also different from omnisexuality as some omnisexuals may have a gender preference.
- I'M PANSEXUAL!? And she's attractive