Fifth Brother's lightsaber

The weapon featured a ringed emitter which could partially detach from the cylindrical handgrip in the center, allowing the twin blades to rotate rapidly without effort from the wielder. For a Jedi hunter like an Inquisitor, this function likely served as a way to intimidate opponents, as well as deflect any form of frontal attack. However, this was also the weapon's primary weakness, as a lightsaber-wielding opponent could simply destroy the emitter itself and cut the weapon in half, as was demonstrated by Kanan Jarrus during his final duel with the Grand Inquisitor aboard the Sovereign.

It could also be used to fly, spinning in a helicopter-like motion strong enough to lift the wielder off the ground.

The Fifth Brother was trained in the use of this lightsaber alongside his fellow Inquisitors in The Works on Coruscant under the tutelage of the Grand Inquisitor.

This lightsaber saw recurring use by the Fifth Brother as he was dispatched by Darth Vader alongside the Seventh Sister to hunt down the Spectres. This hunt would bring the pair into several duels with rebel Jedi, engaging in combat against the cell's Jedi members: Kanan Jarrus and his Padawan Ezra Bridger, as well as the Phoenix Cell's former Jedi leader, Ahsoka Tano.

In 3 BBY, whilst on Malachor, Tano struck the Fifth Brother's weapon with one of her own white lightsabers, damaging his lightsaber. Disarmed, the Fifth Brother was immediately slain by the former Sith Lord, Maul. This damaged weapon was lost afterwards.

The Fifth Brother's lightsaber first appeared in "Relics of the Old Republic," the fourth episode of the second season of the Star Wars Rebels animated series, which premiered at New York Comic Con on October 8, 2015.

In the Obi-Wan Kenobi television series, the lightsaber was used by Sung Kang, the actor who played the Fifth Brother. In an early meeting attended by Dave Filoni and propmaster Brad Elliott, they discussed how to translate the animated Inquisitor lightsabers into realistic props. Filoni advised the propmaster to imagine the live-action came first, and the animated material was an exaggerated version of that. This allowed Elliott to keep the form factor of the props established in animation and to bring them in line with props made for human hands. The prop making team did a substantial amount of research to make sure the lightsaber matched its appearance in Star Wars Rebels. The lightsaber was shifted to accommodate Kang's hands. Elliott and his team were careful to minimize the more fragile looking parts of the animated designs and they made sure that the size of the rings and handles would fit their intended character. The hero hilt used by Kang was interactive and could light up.

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