Naily is a hardware nail who can often be silly and humorous, remaining mostly quiet other than to crack a few jokes, primarily nail puns. On the other hand, she can be argumentative and even dangerous, such as when she stabs Spongy. She defends this by saying that, when one is a nail, they often get the urge to stab things. She can also have a softer side as seen how she apologizes to Woody for stabbing him and helps him by cheering him on. She also loves to make the ":3" face. She is a female.