Ok I have some updates, first here is a sketch design of two characters, one of them is the antagonist and the other..is to leave you guessing but you can note her clothing is similir. Also to those who have seen my eariler xcom work you have seen this girl before, she's just older now.
And here's the third page
Just to also let you know the human characters in top frame were modelled from:
Goose (galaxy rangers)
Zack (where on earth is carmen sandiago)
Amanda (The hurricanes, a cartoon football series)