Okay, @theweirdfangirl, your turn!! Top down on Edward…
Okay, I lied! Not top down. I skimmed through your character sheet, and I feel the need to let you know right away that there isn't a TON I can work with here. Given that Edward's a mentor, not an MC or even main support, he doesn't NEED insane levels of development. So it's probably fine that a lot of this is unclear! But as a critic, I just can't give you a ton. I'll do my best and also let you know what I think the most important areas to flesh out are, and we'll see how this goes!!
First up, let's peek at motivations! Obviously the desire to help those close to him is a perfectly fine motive, but the question here is how he MAKES FRIENDS. He's secretive, bad at communication, and seems a little aloof. I need to know more about Edward's soft side to know how he gains a circle of people close to him that he can look out for.
Prejudices is blank, and I will encourage you to fill this one out!! All characters have prejudices, whether they realize it or not. If they see them, they can work against their prejudice and grow out of an old mentality. But if they don't see it, that can lead to a whole slew of awkward or even nasty interactions.
Religion and politics!! Okay, these are my favorite fields to rant about because I think they're SO important and no one else does, really. For religion, even if your character has no religion like Edward, it's still helpful to make it clear if they're atheist or agnostic (if you don't know the difference, it's super fun to read about)! This is a vehicle to paint a character's worldview as more nihilistic or hopeful. And as for politics, it's always a nice baseline to place your characters on a scale of liberal-to-conservative. This works even for characters who aren't politically active, and it works as a vehicle to tell readers how open your character is to change!
And then I feel like 'job' is a REALLY important field for Edward. I mean, he's a mentor. Is he working at, like, a biotech company? Is he a disgraced sociologist who runs models from his basement now? Job usually isn't a major deal, but in Edward's case, it is.
Okay, well, there's no backstory here. I understand that this is a side character at best, and he doesn't need every moment of his life categorized like an MC does. HOWEVER, there are a couple things that need explaining!! In particular, flaws, prejudices, and motivations need basis in backstory. Everything does, really, but the negatives are most important. And remember that nothing happens in a vacuum!! So if our man Edward has a job at a tech company, how did he get it? Where did he get his PhD? Was there a dark period in his life? Why does he decide to mentor your MCs? Now, I'm not going to force you to put this all on Notebook, but make sure to be thinking about it at least!!
Aaaand that is all!! I'm terribly sorry I couldn't give you many CRITIQUES critiques, but I still really hope that my suggestions are helpful to you in some way!! :DDD