Fives and his medical droid conspirator AZI-3 continue to dig for the truth in this, the third of a strong four-part arc. Last week, the two removed a tumor from the brain of Tup, a clone trooper who had gone berzerk and killed a Jedi during a battle. Tup subsequently died. Fives was arrested. This week, he escapes custody and springs AZI, too. Snooping around the Kamino labs, they find that Tup, Fives and in fact all clones are implanted with an inhibitor chip, purpose unknown - at least to them. Along the way there are enlightening and uncomfortable arguments between Nala Se and Shaak Ti over whether the clones "belong" to the Kaminoans or the Republic.
AZI-3 is short for AZI-345211896246498721347. The full designation comes up in a discussion between the medical droid and Fives (aka ARC-5555) about whether the numbers are demeaning to the clones or the droids. This arc marks AZI-3's only appearance in the series. He has quite a number of talents that come in handy in this episode. In addition to being an expert surgeon, he doubles as a jet ski. He is voiced by Ben Diskin.