- "You can't keep them reined in obviously, so we will."
- ―Mas Amedda to Satine Kryze
Duchess of Mandalore
He was present during the invasion of Naboo and became a bureaucrat during the Clone Wars. He controlled where clone troopers went, and he was part of the plan to help Death Watch take over Mandalore. He told Duchess Satine Kryze that they were going to occupy Mandalore, and there is nothing she could do about it. He always appeared side-by-side next to his boss, Palpatine.
The Zillo Beast
Amedda was present alongside Supreme Chancellor Palpatine protected by Senate Commando's on Coruscant when they are transporting Zillo Beast and welcomed General Anakin Skywalker and Mace Windu. When Palpatine choice to kill the beast, Amedda advised him it's amour could be used for the army.
Vice Chancellor Mas Amedda and Chancellor Palpatine were presiding over the Galactic Senate, about a bill proposed by Senator Padmé Amidala to cut down on Military spending which he did not support and also attended Onaconda Farr funeral.
When Inspector Tan Divo was investigating the death of Farr, he was present along with his boss Chancellor Palpatine during the investigation.
Crisis on Naboo
Vice Chancellor Mas Amedda also accompanied Palpatine at the celebration on Naboo called Festival of Light. During the festival, Palpatine was kidnapped by Count Dooku and a group of bounty hunters for Count Dooku.
- "The Zillo Beast" (Appears in flashback(s))
- "The Zillo Beast Strikes Back"
- "Duchess of Mandalore" (First appearance)
- "Sphere of Influence"
- "Heroes on Both Sides"
- "Pursuit of Peace"
- "Senate Murders"
- "Friends and Enemies"
- "Crisis on Naboo"
- "The Lawless"
- "The Jedi Who Knew Too Much"
- "The Wrong Jedi"
- "The Rise of Clovis"
- "Crisis at the Heart"
- "The Disappeared, Part I"