Doing this mostly for me so I can see the heights of my two newest characters as compared to Nikki. Bios to follow:

Six Persephone Surname: From the Fallout universe. He's a courier and amnesiac. He doesn't remember most of his life before an accident during his last delivery (it involves tumbling headfirst down a chasm, don't believe the bull he tries to sell about being shot). He took the name Six from the delivery order he still had on him. His middle name is one of the only things he remembers from his past. He hates it. Six isn't very smart or strong but has one thing, speed and a love of guns that borders on fetishism.

Nishii Watanabe: Nishii is a cheetah high school student. His parents past some time ago and rather go into the system he chose to keep to himself and live mostly in and out of shelters and people who let him couch surf. He loves music and dancing and will sometimes perform in parks and in plazas to make a little money. He is trained in martial arts, specifically ju jitsu (having taken classes before his parents died) and capoeria. He is a poor student, mostly because he doesn't do anything in class rather than a lack of intelligence. On the contrary he is very smart, but only when the subject interests him. He's also a huge glutton and has a very bad habit of eating his friends out of house and home.