When Shepard finds him in the Eclipse base as part of Samara recruitment mission, he is standing in front of a vending machine. When he notices that there is someone behind him, he slowly turns around and waddles towards Shepard who pushes him back, nearly causing the volus to fall over. After regaining his balance, he starts to walk around and talks about his "powers". He claims that he has become immortal and refers to himself as a "biotic god". By speaking with him, the Commander learns that the mercenaries pumped the volus with biotic-enhancing drugs (probably Minagen X3 or Red Sand) and that Niftu Cal is a member of Pitne For's trade group.
For Paragon points, the Commander can convince the volus to give up fighting the mercenaries and find a place to rest by interrupting him — he will refuse, and Shepard can tap him on the head, sending him off balance and bringing him back to his wits. Later he will appear in the star port and thank Shepard. If the Renegade option is chosen, Shepard will tell him to go right on ahead. Niftu Cal will attempt to fight Captain Wasea by sending a Reave orb at her that stops just in front of her nose, and is promptly thrown, resulting in his ignominious demise.
This is a paper model, it was designed by daishi.