Lenna is very similar to Ballora, they can only dance to move, Lenna can't see unless her eyes are open (Obviously), and it's uncomfortable for them to open their eyes so they keep them closed most of the time and they rely on sound (Just like Ballora). Lenna's voice is entirely different from Leo's voice, Lenna's voice is soft and feminine. Just like Ballora, Lenna can crawl like a spider on the ground but they only do that if their angry or they want to scare her brothers so they do a poker face with it. The only thing that will get Lenna angry is anyone hurting/killing any of her siblings. If it's a weak villain like Kraang Droids or something then he gets a little upset but not much but if it's a stronger villain like Shredder or Kraang Sub-Prime then he'll lose control of his body and attack the person who hurt them. Lenna's systems act similar to the toy animatronics from FNAF 2, Lenna's system scans the person who killed her brothers, then she checks for any reports about them from the Mutanimals, and if there aren't then Lenna goes for the kill, if they are just hurt, it's easy to calm her down.
"You're different from what I expected," she said softly.
"How so?" he asked, glancing at her.
"I don't know," she replied, searching for the right words. "You just... have this way of making people feel like they matter. Even here, in this... nightmare."
He was quiet for a moment before responding. "You matter, Y/n. Don't forget that."
OR
Y/n wakes up in the deadly Squid Game, surrounded by strangers and fighting to survive. What she doesn't know is that the mysterious Frontman is watching her every move through the cameras- and she's caught his attention.