Ok I was hopping somebady can tell me if Starfox (Eros) is a Alien ? I ask becuse he was Born on Titan even though is says God/Eternal on his bio page ?

Starfox's band of Eternals live on Titan. Thats one of Saturn's moons. He was probably born there so yes.

There are two different groups of Eternals, those who generally fall under Mentor and those who generally fall under Zuras. Like Gravitypress states, Starfox falls under the Eternals grouped under Mentor who lived on Titan.  

So the anserw is yes he is a Alien.

@Kid_Omega_Prime: only alien by culture since he was never born or raised on earth... but he is of Earth Eternal Lineage