The Malevolence was a Separatist starship during the Clone Wars. It is a ship that has a massive ion cannon ( leaves ships defenseless by shutting off all power) on each side. As it moved to attack a medical station, Anakin Skywalker, Ahsoka Tano and Plo Koon flew Y-wing bombers and crippled the cannon. But as they moved in to destroy it Padmé and C-3PO flew in thinking that it was diplomatic mission and Grievous who was in command took her hostage. So anakin and Obi-Wan boarded and freed the senator and droid, then crashed it on the planet below but Grievous escaped and flew off.