William dunbar is from the code lyoko series he was a part of the lyoko warriors until he was captured and brainwash by xana a ai the lyoko warriors were fighting and was forced to fight against the other lyoko warriors he was freed but the other lyoko warriors kicked him out and have been treating him like a threat and Pariah. odd Jeremie Ulrich aelita and yumi tell him they can't trust him william has become depressed because of this he tries to regain their trust and faith in him but they don't give him a chance so william focus on his school work and decides to make new friends

in the avatar world shen is from the lin kuei a clan of warriors shen is a skilled swordsman and icebender and martial artist now that the avatar is back his father has sent him to help the avatar and his group shen will do everything in his power to help the avatar defeat the fire nation

sokka is the first born son of chief hakoda and lady kya and older brother of katara his sister was a waterbender sokka was a icebender a rare and deadly bending style sokka and katara were playing the fire nation came looking for the waterbender kya was ask who was the waterbender sokka used his icebending to protect his mom but was captured by the fire nation on their Way he was rescued by the lin kuei clan and was rasied by them and trained to master his icebending sokka is a lin kuei Warrior

dream ghost she haunts fort detmerring where her boyfriend was station during the war he died she haunts the officer's quarters bedroom which belong to her boyfriend anyone who wears her boyfriend'suniform and goes in the bedroom she will appear she is friendly and wants a boyfriend