You are on the right track in that the concept can easily grow off zorox. Here are your choices:

zoroxiik - instantly understood even under Legacy grammar, well established ending. Basic choice.

zoroxin - literally 'creation-master', somewhat more formal, connotes prowess and competition.

zoroxaar - literally 'creation-servant', suitable if the creating involves duty or obedience to another.

zoroxmaar - literally most likely 'creation-self', might find a use if the creating involves solitude or introspection.

zoroxaan - identical to the participle of zorox, follows a canonical model but should be avoided for fear of confusion.