Creator Is A Title of God’s
nEcclesiastes 12:1 Remember now thy Creator in the days of thy youth, while the evil days come not, nor the years draw nigh, when thou shalt say, I have no pleasure in them.
nIsaiah 40:28 Hast thou not known: has thou not heard, that the everlasting God, the Lord, the Creator of the ends of the earth, fainteth not, neither is weary?  There is no searching his understanding.
nRomans 1:25 Who changed the truth of God into a lie, and worshipped and served the creature more than the Creator, who is blessed for ever. Amen.
n1 Peter 4:19 Wherefore let them that suffer according to the will of God commit the keeping of their souls to him in well doing, as unto a faithful Creator.
Being the creator is what makes God God.  It is His mandate.  If he was not the creator, and did not initially create us in his image as is stated in Genesis 1:26, His demands on us would be those of a bully intent on getting his way because he is more powerful than us.  But, because He created us in his image, He has the right to expect us to reflect His character.  Because He created us, there is good reason to believe that He can recreate us in His image as is pointed out in: