Lo'ak Sully always a disappointed son in his father Jake Sully eyes and his mother Neytiri eyes. Even though he disobeyed their orders sometime his curiousity getting him, his reckless and stubborn traits got from Jake, his Anger and Rage traits got from Neytiri. A mix of his parents traits, despite Lo'ak has fragile body like his mother a warrior not like his eldest brother Neteyam muscle a little like jake

He have eldest brother Neteyam in age 15, his unofficial twin adopted sister Kiri a bit earlier 12 minutes born before him as Kiri and his age 14, his youngest sister Tuk age 7 year-old. Despite Kiri has sarcasstic ever but she always be there for him when their father scold him for reckless thing

Lo'ak always brough a shames in his family but his sibling always be there for him. In though of it, he look like lonely and only he could hold his behavior not get into trouble but got into trouble mess. Until RDA return with Miles Quatritch

After Jake killed Quatritch, Neteyam got shot but manage to be safe, he's in states of coma's. Jake always blamed on Lo'ak for everything but his just a teenagers kid growing in war to be warrior, after all Neteyam, Kiri and Tuk is his parents favorites children who obey their order unlike him disobeyed their order at once

7 weeks has passed, Lo'ak always has own hut but have a father figures always there for him. It's Angelion, a Metkayina and a brother of Tonowari the chief leader. Lo'ak find comfort around Angelion cause he feel safe around Angelion hut as for staying but he feel guilty getting Neteyam got twice killed

Lo'ak accidently called Angelion ‘Dad’ instead of ‘Mr. Angelion’ but Angelion like what lo'ak called him Dad at all and he did want lo'ak happiness. When Neteyam awake from coma's but Lo'ak knew his forbidden to see Neteyam on his trouble dangers

Neteyam saw his brother Lo'ak not in their family hut. When Jake going search Lo'ak, he froze seeing Lo'ak spend time with Angelion a male without news of Neteyam awake yet. Then Jake heard something Lo'ak called Angelion dad, it broke Jake heart Lo'ak replaced him but he can't blamed Lo'ak cause he always doing

"Dad i wish Neteyam awake from coma's?" *Lo'ak replied, calm and obedience at once, it was once for that. A child favors but casted Lo'ak away, try get help