Jujuba_arts_lover claim! i had so many thoughts sorry dkdkdkd
design: 8/10! Character design is pretty subjective, but I must say that her design matches pretty well on a story point! I don't know much about the franchise [besides the recent movies], but based on what I've seen she would match well with the Sonic universe while still looking like her own unique character, which is great! Her design is simple, but pleasing as well! I especially like the mix of blues and yellows in her palette. Idk about you but it seems that the highlight of most Sonic characters is the shoes [they just seem to be more detailed compared to other parts of the design lol], so I thought the addition of her socks were pretty nice [maybe even a lil' clever]!
personality: 5/10, You've given her a good amount of positive traits [kindness, helpfulness, and optimism], as well as neutral traits [shyness, romantic], and you’ve explained them really well! My suggestion however would be to work on her flaws more. You've said that she gets deeply sad and isolates herself sometimes because she doesn't want others to know, but other than that, there doesn't seem to be much info about her weaknesses. Some imperfections would complete her personality! Maybe she's someone who had trust issues and was unable to open up, which makes it harder for others to trust her due to her lack of openess/transparency [you actually did showed this throughout her story! so maybe this could be something you add in her personality bit]. Or maybe she was a people pleaser that always follows people's request, due to the fact she's scared to be mistreated again. It could come to the point where she neglects her own needs and gets overwhelmed, eventually snapping out. These were just some ideas I thought of tho from reading her bio, try exploring yourself what works best for you and Crystal!
story: 9/10! It ended up being this high because I read the relationships and I got so invested lol, they were definitely the best part in terms of writing [maybe even the best part in general]! Well atleast in my opinion hehe. I love how you've written her relationships for both canon and fan characters. I love how each of them were specific to the character, and the different ways they bond [kinda like how real relationships work]! Reading through them was like seeing bits of an adventure :O You also show that relationships aren't perfect. A bit I appreciate is how you've written her relationships with Stella, it's clear that even after saving the multiverse together, they clearly didn't became "besties". Just because they ended on good terms, doesn't mean they have to be close. To me that's what made their relationship more realistic :]
other bits/conclusion: A thing I liked too is the specific interests you gave her, as well reasonings behind them! It's a nice addition you've added for sure. As or powers though, I'd usually say there were too many [over-powered], but at the same time I realize that it seems Sonic characters often have many powers at once, plus the fact that she's genetically modified by Starline. So I guess I won't judge on that, since I'm unaware how powerful Sonic characters are on average lol. There were very few grammar errors, but they weren't too important. My overall rating of Crystal would be 7.5/10! I think I should read Stella next, I'm curious about her 👀
next person pls ping! i am open with constructive criticism, so feel free to share any that you have! :D [i don't show their backstories lol]
Captain_Fartbeard why thanks for the input! however max isn't meant to be part of a kids show [but rather a comic! with a theme much darker than it seems]. i'd do like to know more about what made it hard for you to find his "signature traits" from his bio! i knew i had an idea in my head, but i wasn't sure if my typing made sense of it dkdkkd