My Sonicsona (oc? It's my Vtuber/me as a Sonic character)
Either way, this is my current main Sonic OC.

Techy's powers are all agility based. She does parkour-like stuff. She likes to build little gadgets to fight with by repurposing parts from destroyed Eggman bots.
She loves video games, especially wiping out all the high scores at the local arcade, but she seems to leave the high scores with the name "ULTIM" alone.
She loves to collect things anything is game from plush toys of her favorite IPs, figures, toys, shiny rocks, anything that catches her eye is game.
She is fascinated by lots of things hand has lots of hobbies which has given her enough skills to be a "Jack of all Trades" so she gets a lot of random requests to fulfill all kinds of requests at Resistance HQ. She doesn't mind it at all and loves to be helpful no mater how small the task.
She is clever and resourceful but also a bit.. absentminded, usually daydreaming over random thoughts when things are quiet.

She has a soft spot for bad boys... She has a huge crush on Shadow the Hedgehog, but she may also have a small crush on some other villains she crosses paths with. She genuinely believes there is good in everyone. She isn't scared of them and it weirds all of them out.
Maybe she just wants to "fix them" who knows. She does enjoy a good project after all.