Mahasiddhas nearly always have their hair fastened in a topknot. They occasionally wear it loose over their shoulders or piled up on their head. Seen from the front, this man has short curly hair (which may be long at the back). The wide gaze and the cross-belt indicate that he was a yogi.
Seated in a relaxed posture, the above leans on his left arm and holds a skull cup filled with blood in the other. He is adorned with a floral tiara and bone ornaments including the traditional cross-belt with a large flower at the centre.
An elderly man seated on the skin of an antelope (identified by the hooves) and wearing a long garment. He holds a vase of longevity against his chest and may have had another attribute in his left hand.