In the recent movie *Justice League*, the villain of this part was Steppenwolf. I had previously heard rumors about Darkseid being the villain. (Maybe he'll come in the second installment)

So,

 - Why was Steppenwolf brought first as the villain before Darkseid? Is he Darkseid's commander or something?
 - He mentioned Darkseid's name in one of his *speeches*, what is his relation with Darkseid? *(considering the speech in which he mentioned Darkseid he also mentions his mother, so I was thinking maybe there's some family relationship)*