Tynann still can't be certain if Medical is his ideal department, despite having already worked in several Sickbays.  He joined Starfleet out of a desire to see if he could do so, more than out a desire to actually be a medical technician.  He tends to come across as overbearing and annoying when he first gets to know a person, but once a relationship is developed and the initial uncertainty ends, he calms considerably.  For fun, he enjoys drawing pictorial caricatures, collecting old keys, and taking long bubble baths.