He is evil. He betrayed Edenia to serve Kahn when faced with Death and he did go more in the line of conqueror instead of protector when he got that kind of power from defeating Blaze. He is MK's Benedict Arnold (so is Tanya but he came first...Edenia gets the shallow end of the gene pool doesn't it?).
Well, if you think about it he's misunderstood see Argus left him and his mother for another family who wouldnt get angry and go astray when.
Something like that happend to them he just need's a convinceing from Kitana
or Argus or Taven to help him turn good so i just hope in the future he goes good.