Luna is a very uncommon character in game and most likely will only appear at night hours and it's even more rare for her to be on light floors, the most common place for her will be blackout floors, she hides within corners and spaces where the player can't really see her. From her voice box she will play a babies cry to get attention of the player, it's more unnerving at night to play a cute game and hear a babies cry, alone. After she's got their attention she'll try to Attack. Unfortunately, she's a little faster even with sprint so the player will have to circle around tables, boxes etc to survive, luckily her keep time is only 3 seconds then she'll leave you alone.