Clone Wiki
Electro-proton bomb

Designed by:

Sionver Boll[1]




Galactic Republic[2]


Clone Wars

This is a Class 1 article.

The electro-proton bomb was an experimental ion bomb designed by Sionver Boll[1] and used during the Battle of Malastare. It released a strong electromagnetic wave that was capable of disabling an entire army of droids, although all technology within its range would also be affected.[2]



The bomb's side profile

The bomb was roughly pentagonal in shape, with a tail, body and front section. It was painted white, gray and red. Numerous sections featured Aurebesh writing, both for genuine operation instruction and personal war messages. The back had five fins and the front had a spike sticking out.[2]

The bomb could be dropped onto the battlefield via a starfighter, such as the Y-wing bomber. Upon detonation, it produced a massive electromagnetic bubble, disabling all electronics within its blast radius.[2]


Invented by Doctor Sionver Boll for the Grand Army of the Republic,[1] it was intended to affect droids and electronic systems while leaving living beings unharmed.[2]

Electro-proton explosion

The detonation of the bomb

During the Battle of Malastare in 21 BBY,[3] Republic ground troops were almost pushed to their breaking point by a CIS army. As a last resort, the release of the bomb was carried out by Red Squadron's Goji,[4] who dropped in right into the center of the droid units. After producing a massive dust cloud and explosion upon its fall, a large electromagnetic field was created, disabling both droids and clone tanks. However, an unintended side effect was the collapse of the ground beneath the battlefield, causing many troopers and vehicles to fall into the massive sinkhole. The disruption of the land led to the awakening and rise of an ancient and powerful creature known as the Zillo Beast.[2]

After the end of the Clone Wars, the Galactic Empire was rumored to have developed a bomb called the Electro-Proton Bomb/Defoliator. It combined Boll's technology with the Separatist Defoliator weapon.[5]



  • The red Aurebesh lettering on the front of the bomb says "Caution Ion Detonator", while the body says "Code Switch Designator". The back fin has a yellow hand-scrawled message saying "This is for you Dooku".[7]
  • The production name for the weapon was simply "the ion bomb".[7]


  • CW Star Wars: The Clone Wars – "The Zillo Beast"
  • CW Star Wars: The Clone Wars – "The Zillo Beast Strikes Back" (Appears in flashback(s))


External Links[]


21 BBY[3]
Battle of Malastare[2]


  1. 1.0 1.1 1.2 DB Sionver Boll in the Databank (backup link)
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 CW Star Wars: The Clone Wars – "The Zillo Beast"
  3. 3.0 3.1 Star Wars: Galactic Atlas
  4. SWCustom-2011 "The Zillo Beast" Episode Featurette on (backup link)
  5. Star Wars: Rebel Files
  6. SWCustom-2011 The Clone Wars Episode Guide: The Zillo Beast on (backup link)
  7. 7.0 7.1 SWCustom-2011 "The Zillo Beast" Trivia Gallery on (backup link)