The use of red pigment for the face as well as for the hair and beard makes this shadbhuja Mahakala look particularly irate. Clad in a tiger skin loin cloth and adorned with a garland of severed heads, snakes, a Chinese-style celestial scarf with serpentine ends, a skull crown, and large earrings, he stands on elephant-headed Ganapati, who holds a large jewel. Mahakala’s upper hands hold the hide of an elephant stretched across his back plus a rosary and a (missing) trident or a staff. The main hands hold a vajra-handled flaying knife and a skull cup filled with blood, the lower hands clutch a drum and a lasso.
18th century, Mongolia, unidentified (labelled ‘worldly protector’), gilt bronze with red pigment, private collection, photo on Sotheby’s, Hong Kong
This wrathful character, possibly a retinue figure, rides a male buffalo across a sea of blood and likely held an implement in his right hand (and maybe another in his left hand).
18th-19th century, Mongolia, Begtse Chen (labelled ‘Mahakala’), gilt bronze, private collection, photo on Bonhams, Sydney
Apart from the Mongolian armour and boots specific to this dharmapala, the wrenched heart in his right hand identifies this character as Begtse Chen, who wields a scorpion-hilted sword (the blade now missing) in his right hand (see close up on above link). He normally stands on a lotus pedestal, trampling upon a horse with his right foot and a human victim with the other.
Himalayan Buddhist Art - Art Bouddhiste de l'Himalaya 