Corrected entry: Uncle Ono is there and was attacked but the season before he was murdered with poison.
Star Wars: The Clone Wars (2008)
1 corrected entry in season 3
Starring: Dee Bradley Baker, Matt Lanter, James Arnold Taylor, Tom Kane
Mystery of a Thousand Moons - S1-E18
Continuity mistake: In the previous episode, the Republic troops blasted huge holes into the Separatist lab to enter it. In this episode, in which the highly contagious airborne virus is unleashed into the facility, the holes are conveniently nowhere to be seen, so it can't get loose onto Naboo.
Mystery of a Thousand Moons - S1-E18
Obi-Wan: Very impressive. You just destroyed seventeen defenseless battle droids without suffering a scratch.
[Another battle droid falls apart.]
Anakin: Eighteen, actually.
Trivia: When Sy Snootles kills Ziro the Hutt, he mumbles "What a world," a reference to The Wizard Of Oz.
Question: Did Darth Maul's return in this series cause big controversy among Star Wars fans?
Answer: I would say his death in Phantom Menace was more of a controversy. He was a fan favorite character from the movie, and his fight scene largely regarded as the best part of the movie. It was more he was brought back to please the Star Wars fans and few, if any, had problems with it.
Correction: The episodes were aired in anachronic order: "Senate Murders", where Ono dies, is set after the events of this episode. There's a list on the Star Wars website for anyone curious.
skater49th