This is concept art for an OC I have. Basically, she's from an alien race called Terra2 (terratoo). They're basically like humans, but they gained technology so advanced that there is no reason to live in a human body, so almost all of the population has their brain laser-mapped (like with the LMDs in AoS) into a robot. The OC's name is Twaiselov (twi-say-love), usually called Selo. She left the planet when she was 50 (Terra2 people in robot bodies can live indefinitely, until their body and brain is destroyed) and made a name for herself as one of the most deadly beings in the galaxy. She usually rounds up high-threat criminals and targets and sometimes is needed to stop intergalactic warfare (usually by force). She can lift over 900 tons, doesn't need air to survive, can fly, has a nearly unbreakable and regenerative body (made of nanoparts), super advanced weaponry, and is efficient and trained in many styles of fighting and weapons. On Terra2, hair is also a sign of status and power, so the bigger, crazier, more decorated your hair is, the higher status and power you have. Selo usually folds her hair into a fancy ponytail down to her waist using nanoparts to compress the rest, but when she needs to use a lot of power, she lets it all down in all it's decorated glory. I didn't include all of the details, but basically think of No Game, No Life: Zero meets Alita: Battle Angel.

I'm also thinking that the reason hair is so important is because the hair that you're given when you level up/rank up can channel and conduct energy and electricity. And since I'm guessing that none of you have seen No Game No Life: Zero, here's a picture of what I imagine Selo to look similar to