Tiber Saxon

"I am the Empire! Palpatine has shown me the true way to power."

- Tiber Saxon to Sabine Wren and Bo-Katan Kryze Tiber Saxon is an antagonist in Star Wars Rebels appearing as the main antagonist of the Heroes of Mandalore episode, the first episode of the fourth and final season of the series. He was the brother of the late Gar Saxon and took over his position as the Imperial Viceroy of Mandalore and continued to keep the planet under the control of the Galactic Empire. He later got involved in the Mandalorian Civil War where he helped develop a new weapon to supress the armed resistance against the Imperial-backed regime on rebellious Mandalorian clans such as Clan Wren and Clan Kryze.

History
After the death of his brother, Gar Saxon, on Krownest at the hands of Ursa Wren of Clan Wren, Tiber Saxon succeeded his brother and took over as the new Viceroy of Mandalore and was the new leader of the Imperial-backed puppet regime on the planet in service of the Galactic Empire against the rebellious and rival clan. A civil war broke out on Mandalore not long after Gar's death and Tiber was forced to take action to retain Imperial hegemony on the planet. Seeking to gain more power, Tiber rebuilt and worked on the Arc Pulse Generator, a superweapon built by Sabine Wren intended to be used against Mandalorians exclusively. The weapon would emit a lethal energy beam that would pierce the Mandalorian armor made of beskar and disintigrate the hosts inside the armor while sparing the Imperial Stormtroopers from its effects. Such a weapon would demoralize the Manalorian rebels turning one of their most treasure posessions and iconic traits and strengths into a crippling weakness.

Tiber had the generator used in action during the Mission to Mandalore where it was attatched to a modified AT-DP Walker and it was fired upon a unit of Clan Wren warriors and killed all but two, Ursa and Tristen Wren. The footage of the battle was shown to Grand Admiral Thrawn via hologram to show how he's been handeling the rebellion against his regime, but Thrawn was displeased at its short range and stated that Tiber was going to need Sabine Wren to complete the weapon and have it function at its fullest potential.