Osiris --While he looks otherwise physically normal, he's got fourteen thin, pale scars where Set cut him to pieces. No matter what form he takes, those scars are always there, and he's never been able to heal them. The only way to take him permanently out of comission is to slice him apart directly on those lines.
--He has nightmares about being trapped in his coffin, pounding on it and feeling it slowly flood with water. He often tries to avoid sleeping if he has the nightmare more than once a month.
--He figured out how dangerous mortal beliefs could be to the gods long before their pantheon actually fell from power, because he still remembers a time before everyone believed he was a god of the dead. Broods more than he'd like to admit on whether anything he remembers actually happened or is just a product of humans believing it happened.
--As much as he cares for Bast, he is a little unsettled by her because of the aforementioned brooding. He views her as more evidence of the power humans have over them because of his conflicting memories over whether or not she's his daughter. But he doesn't like admitting this, even to himself, and he'd never want to tell her.
--He would do anything Isis told him, and believes in his heart of hearts that she was a better ruler than him. He loves her more than anyone else, and always has.
--A part of him wishes Horus had killed Set permanently, and he can't quite feel ashamed of this, even though he wants to. But an equally strong part of him wishes that he and Set could work things out, somehow. He sometimes wonders if human belief isn't the reason they're always at odds, but that just makes him brood more.
--He was attracted to Nephthys a long time before she seduced him, but never would have acted on it. He never blamed her for what happened between them, and was secretly thrilled when she became pregnant with Anubis. He feels more protective of her than he does of Isis (mostly because he assumes no one would stand a chance against Isis) and would be willing to kill Set if he thought his brother would ever intentionally hurt Nephthys. But he also knows that Set would never do that. Basically, Osiris just wishes his siblings could work things out.
--Osiris feels happiest when he's pretending to be human and can forget about all of the problems that come with being a god. He's not sure what this says about him.
--He can hear, see, and interact with ghosts, and for a while he considered that he working with the police to solve murders, but he doesn't think he could handle interacting with people so often.
--He misses the Underworld and sometimes wishes he could go back and reign there, where it's quiet.