I'm done! Although they're pretty rushed, so sorry if there personalities don't match the description.

Name: Steve
Age: 14
Gender:male
Weaknesses: clumsy, forgetful
Strengths: fast learner, great listener
Pic:
History/backstory: he was an only child living at home with his parents before they both died of a sickness that spread through the village. He was then left alone with no one to look after him, that was before Harrison saved him. Harrison is an officer, a guard inside the wall that happened to find the lost boy and raise him, now they plan to work together to protect the people on the inside.
What corps?: Garrison
Rank in class:20 th
Can they change: no

Name: Harrison
Age: 37
Gender: male
Weaknesses: wants to try to save everyone, missing a leg from a Titan attack
Strengths: cunning, surprisingly fast on his "feet"
Pic:
History/backstory: he lived a normal life going to the academy and getting into the garrison regiment before the wall fell. He vowed then to never let it happen again, or to let anything happen to Steve
What Corp: Garrison
Rank in class back in the day: 5th
Can they change: no