From Dragon Ball Encyclopedia
Toolo (トオロ, Tooro; FUNimation "Toolo", Viz "Tooro") is a Kanassan.
Toolo emerged from the rubble after all of the other members of his race had been killed and attacked Bardock by cursing him with the ability to see into the future. He was then tackled by Shugesh and shot with a Ki Blast by Tora. Before dying, Toolo laughed and warned Bardock that he would now be able to see the horror of his end just as the Kanassans had been able to. Angered at Toolo, Bardock killed him with another Ki Blast.
Toolo's voice would continue to haunt Bardock until the time of his death when Freeza blew up Planet Vegeta. Presumably, he was at Bardock's side when he said goodbye to his second son, who was sent to Planet Earth.