Elsen make up the population of the . They are the first populous encountered in the game, and they are the general neutral party that make up most of the population of the world of OFF. The entities generally dress in very sterile, formal attire, which seems to be related to their jobs. They have limited awareness about both themselves and their environments. However, their attitudes and actions vary depending on where they are, such as with Elsen in The Room actively assisting The Batter and The Player. They are encountered in every Zone with the exception of Zone 0.