Star Gazer

After beating the game I got to the end now I did the choice synthesis and I was wondering on this fact if anyone can shead some light be awesome. 

I know after what is done and synthesis takes place everyone becomes both 

so anyways here is the question at the end at the stargazer scene is it Joker due to the fact that if it's true humans and all life being both (Able to live forever)   and the female stargazer is it liara as it looks like a Asari