- gets shot in the head in white forest and survives. It damages their neural augments. their brain is severely fucked - both from the initial combine augmentation, the gunshot, and the subsequent experimental surgery.

-theyre no longer automatically loyal to the combine/hostile towards rebels. however, they aren’t hostile towards lingering combine forces, either. the only thing that consistently registers as an enemy to them are feral aliens and zombies. for a while after waking, they are easily made nervous, and thus aggressive. they need patient and gentle handling to level themselves out.

-has moments where combine programming seems to kick back in - almost exclusively when engaging in or witnessing violence. rather than a flip in allegiance, they become indiscriminately aggressive and will attack anything in close range, friend or foe. they eventually come out of these fugues if given a peaceful environment. for their own sake and the sake of others, they are kept away from violent situations as much as possible. In general, bibi tends to pick up on the atmosphere around them, and in a peaceful environment, they will pose no risk, while in a space where ppl are nervous and uneasy, they may be more unpredictable. they basically see everyone as an "ally", until confronted with violence, at which point the blanket perception switches to "enemy"

- can't really speak. In my headcanon combine soldiers radios are "built in" to their anatomy/mask, and they have radio speak they are programmed to use. Bibi speaks in combine radio chatter, communicating through set phrases. Due to damage, sound of it is distorted, similar to the glitchy pinging and snarling of Zombine radios. Eventually, they is able to chop and screw the programmed phrases a bit to allow themselves more variety.

- favorite stock phrase is "sector is... ghhghk... nottt secure", which they use whenever there's something "wrong", from there being a headcrab around the corner to someone leaving cabinets open in the kitchen.

-fairly passive most of the time. Shambles about like a sleepwalker. can be nudged into doing simple tasks and chores. mostly docile and obedient, but can randomly become very stubborn

-is learning to cook. The frilly apron was put on them so that people would be less nervous around them. They like it, and will wear it randomly, even when not cooking.