N_N is a particularly interesting specimen.
When it's not busy vigorously flapping its antennae with like-minded creatures, N_N likes to create strange addons for a mysterious engine of sorts that it dubs "M.U.G.E.N".
Additionally, some witnesses have even reported that N_N is capable of producing art, though this has not been confirmed.

N_N is mostly docile. If N_N ever turns aggressive, quickly go to the facility CD player and play the specially-marked disc*.

STOP putting in the disc labeled Comedy Do this again and your fired

*Disc is marked with an illustration of the comic book character "Doctor Doom" holding a microphone