From "The holy appearance that will identify Hazrat Mahdi (a.s.) to people (2nd part)" documentary
Hazrat Mahdi's (as) beard is copious and thick
Hazrat Mahdi (as) will come in this century and all people will know him from the signs in the hadiths
Hazrat Mahdi's (as) hair is black
Hazrat Mahdi's (as) hair is thick and strikingly beatiful
Hazrat Mahdi's (as) nose is handsome and thin
Hazrat Mahdi (as) has the "seal of the prophethood" on his shoulder
Hazrat Mahdi (as) has slanted eyes
Hazrat Mahdi (as) has green eyes
Hazrat Mahdi's (as) skin is very beatiful and bright
Hazrat Mahdi's (as) teeth are very bright
Hazrat Mahdi's (as) beard is black
Hazrat Mahdi (as) has a black mark on his right leg
Hazrat Mahdi (as) has another mole shaped like a leaf on his shoulder blade
Hazrat Mahdi (as) has a slight concavity on his forehead
Hazrat Mahdi (as) has a light beard, thin at the sides and long at the front
Hazrat Mahdi's (as) forehead is bright
The mole on Hazrat Mahdi's (as) cheek protrudes from it
Hazrat Mahdi (as) has a mole on his right thigh
Hazrat Mahdi (as) has a mole on his forehead
Hazrat Mahdi (as) has a mark (scar) on his forehead
The mole on Hazrat Mahdi's (as) cheek resembles that of the Prophet Moses (as)
Hazrat Mahdi (as) has a dip between his eyebrows
There is a mole on Hazrat Mahdi's (as) cheek
There is a slight protrusion on the center of Hazrat Mahdi's (as) nose
Hazrat Mahdi (as) has a clear, wide brow