Dalso and Takkar were first seen hunting a Woolly Mammoth together with their hunting party before they reach Oros. After they killed the Woolly Mammoth, a Sabretooth Tiger ambushed and killed most of the hunting party, and Dalso was forced to jump off a cliff with Takkar to avoid the same fate. Takkar survived the fall, but Dalso was critically injured. Before he died, Dalso told Takkar to find Oros and the rest of their tribe.