7EX (Earth-2042)

7EX was a B2 super battle droids deployed by the Trade Federation during the Outer Rim Sieges in the Clone Wars.

Biography
It was destroyed by Obi-Wan Kenobi on the Invisible Hand in 19 BBY, during the Battle of Coruscant, while acting as a security droid for Count Dooku.

Source

 * https://starwars.fandom.com/wiki/7EX