HAZRAT MAHDI (AS) WILL POSSESS MAJESTY, CALM AND DIGNITY.
...HAZRAT MAHDI (AS) WILL POSSES GREATER KNOWLEDGE AND FOREBEARANCE THAN ANYONE ELSE. Hazrat Mahdi (as) bears the name of the Prophet and his moral values are those of Muhammad (saas).
(Al-Mahdi Al-Mawud, Vol. 1, pp. 281-282, 266 and 300)