Ja'far seems to take after his biological mother in his appearance. In the anime she has a round face and appears to have long, light coloured hair. Her eye shape also appear to be similar to Ja'far's.
Little is known about Ja'far's Mother's life. At some point she gets pregnant with Ja'far and gives birth to him. She was a member of Sham Lash.
Ja'far was made to kill both his parents at the age of 6 by Sham Lash. Ja'far states that he knew he would be forced to kill his parents at some point and that there was no other choice if he wanted to live.
Years later Ja'far seems to regret killing his Mother and Father. His light side calling out for them when he was being corrupted in Valefor's dungeon. Ja'far's dark side then reminds him that he has no home as he was the one that killed his parents. At this point both the light and dark sides of Ja'far start crying.