Nathan is 25 years old. Calm, relaxed, joking, but in a good way. He jumped off the roof more than 10 years ago and is now trapped on this very roof forever. He does not have a physical body, as he is now a ghost, but in theory he can lift light objects and even touch people. Despite his relaxed attitude, he won't mind listening if necessary. He was 25 years old at the time of the incident, but after his death he stopped aging, obviously. 10 years have passed since that day.