First of all, we should ask, "What does ' wrong ' mean?" Our definition of right and wrong will never be one, and labeling a person as bad based solely on one of the many definitions of right and wrong is not logical.
The most mindful way to answer the question "Do we come into this world as good or bad?" is that we are neither born good nor bad; we just come into this world as an empty slate, and start shaping our personality by the reactions we give to the acts we face in the outer world.