HELIOS-3D was a IG-86 sentinel droid functioning under the command of the bounty hunter known as Cad Bane.
As a member of the Duro bounty hunter Cad Bane's crew, HELIOS-3D participated in the operation to free Ziro from his confinement by the Galactic Republic. 3D's assignment involved piloting a getaway speeder following Ziro's release, which was part of an exchange orchestrated by Bane. This exchange involved using senators held hostage, including the representative of Ryloth, Orn Free Taa. After Ziro's liberation, HELIOS-3D transported him to their designated meeting point at the Senate Building, a destination Ziro opposed, as he preferred to be taken to the Outer Rim Territories.
Despite Ziro's objections, HELIOS-3D rejoined Bane's team, and with their objective achieved, they successfully made their escape.
HELIOS-3D was a IG-86 sentinel droid who served as a bounty hunter within Cad Bane's group. His programming was masculine, and his height was 1.96 meters, equivalent to 6 feet and 5 inches.
3D was an assassin droid with proficiency in both combat and piloting. He possessed knowledge of military strategies and demonstrated effectiveness in data slicing.
3D carried a long-barreled blaster rifle as his primary weapon.