The Massacre of Kamino was the killing of over twelve hundred clone cadets in 21 BBY on the planet of Kamino. The perpetrator was a insane clone named CT-7892 or Chucky. Chucky's attack was completely random. Chucky's victims included his instructor, his Star Squad and at least twelve Kaminoan cloners. After the attack, Chucky stole a Kaminoan starfighter and fled for Separatist space.
Besides the loss of Star Squad and twelve cloners, the massacre had one political outcome. The attack sparked debate about the level of trust the Republic seemed to be placing in the GAR and some senators even called for the production for clones to be ceased to prevent further incidents.