Red heads are not automatically "angry" people. Temperamental or easily angered people should probably not deal with the general public until they have mastered their temperamental side. Which they should do as quickly as possible.
Depends if it's OCD , disability . I have an employee who it severely OCD manic depressive without meds makes my days hell more often than not . If they are just fussy most any job. But be warned most of them won't last long.