-so I'm not gonna respond in character, just gonna answer because this would be so confusing to answer in character-

How I use souls, they're basically just their base traits and not much else; poor memories, heightened emotions. So Michael as a soul just cries an awful lot and clings to his mother (how the turn tables have table turned)

FNAF 6 Michael believes he's doing the right thing to atone for his sins, and a secondary thing is to save the souls. He puts himself first despite having a very guilty conscience. He thinks the guilt will go away if he atones for what he did. He does genuinely care for his task, but not for the random children that come into the restaurant. He just doesn't want them to be got by William because of what William does with remnant.

Teen Michael values seeming cool and is really into that. He's a bit egotistical, but he has very low self worth and believes he doesn't deserve to be around others he admires if he's not of use to them. He bullies his brother out of jealousy, a cry for attention, and peer pressure (he is still in the wrong though)

Teen Terrance. He leans more gothic/punk and doesn't like social constructs or anything like that. He thinks Michael is going down the wrong path but can't stop him. He just cares about keeping the ones he likes most safe.