This Mandalorian warrior was a member of the Death Watch during the Clone Wars.
Around 22 BBY, he and a fellow Mandalorian guarded the Death Watch hideout on Concordia. They attacked and captured Jedi General Obi-Wan Kenobi, who inspected an abandoned mining facility. Both warriors were later knocked unconscious by the Jedi.
Later he, along with two other Mandalorians, accompanied Pre Vizsla and watched as he had a lightsaber duel with Obi-Wan Kenobi. When Vizsla was bested, he ordered the three Mandalorians to finish the Jedi off. They then activated their jet pack missiles and fired them upon Kenobi and the Duchess. Kenobi and the Duchess escaped by jumping down the elevator shaft and the missiles hit the wall.
The Mandalorian was voiced by Corey Burton, who also voiced Cad Bane and Count Dooku in The Clone Wars TV series.