I'm having a bit of trouble deciding which way to go on this. My novel contains an invented race of creatures that are both humanoid and intelligent, i.e. they can communicate, use technology etc. They're basically humans, but different, and some of them are named characters in my novel that play significant roles. My question is, should I refer to these creatures as 'he/she' or as 'it'? Currently, I'm using 'it' for an unnamed, "extra" of one of these creatures, but 'he' or 'she' for any that are actually named. However, I'm starting to thing they should all be a 'he' or a 'she'. After all, they are almost human and an "extra" human would always be referred to as such. Thoughts?