Glutton, and has a sweet tooth. Much of FNC's quotation suggests she is constantly munching on snacks, primarily sweets and chocolates. She was mentioned on AR Type 56-1's quotation, which suggests that the two are friends who shares a common hobby, eating.
FNC have a firepower focus ability, when the skill is active her DPS increases significantly, due to the skill multiplier and her decent innate stats for a 3*, FNC outperforms all the other 3* AR units and is even able to defeat some 5* AR units in short duration battles. The only downside is the short duration and the long reactivation timer.
FNC provides accuracy and evasion on her tile buff to SMGs
FNC made a few minor appearance in with the main and side story lines.
FNC made an appearance in RF FN-49's Digi-mind upgrade back story.
Arriving at her new dorm, FN-49 wonders what her new squad members are like, she noticed FNC sitting on the sofa, wishing to leave a good first impression, she approached to greet FNC. "Waaah!! I didn't steal those candies!", 49's approach frightened FNC, "Oh, it wasn't 57... You scared me there, but who are you though, never seen you before.". 49 said that the Commander arranged her to report here, FNC realised that this is their new squad member they are expecting, the two formally greets each other, FNC treated her to some sweets right away.
FNC even gifted a hair comb to 49 as a symbol of friendship, because she have beautiful hair. When 49 first arrived at the base, she found herself unable to approach most other T-dolls with her shy and timid personality, she was glad she found FNC as a friend. Later that day FNC showed 49 her way around the base, they visited the HQ, the shooting range and the vehicle depot. Eventually they arrived at the storage warehouse for supplies, "Look over there, chocolates, wanna have some?" FNC asks, even though her instincts told her she probably shouldn't take things from the supply warehouse, but under all the encouragements from FNC, she stole them.
While the two sat down and enjoyed the chocolates, they were spotted by the Commander, "You two, what are you doing here!", "Where did you get the chocolates from?". While 49 was stuttering, FNC said: "49 gave me these chocolates!", while the Commander turned his/her wrath at 49 for taking supplies from the warehouse, FNC legged it.