Keechaka, the brother-in-law of the king of Virata, had 105 brothers, who were called Upakeechakas. Keechaka and his siblings were born from the ansh of an asura named Kalakeya. When the Pandavas were living in exile Keechaka lusted after Draupadi and was killed by Bhima. The Upakeechakas got to know of this and decided to burn Draupadi in their brother’s pyre. They carried Draupadi to the burning ground, but her screams brought Bhima there. He uprooted a tree and killed all 105 Upakeechakas as per Mahabharata Virataparva Chapter 23.