Predacon computer

The Predacon computer controls the systems of the Darksyde, the ship that serves as headquarters to Megatron's band of Predacons. Although artificially intelligent, with several specific purposes such as analyzing, diagnosing, computing and system controlling, it lacks any personality or emotion, not to mention a spark. Each Predacon is equipped with an onboard computer of the same type.

Beast Wars cartoon
From the very beginning, the Predacon computer acted as Megatron's assistant whenever he had some evil scheme to employ. This continued for some time, until the Darksyde was blown up by the arrival of Tigerhawk and the Predacon computer along with it.

Ravage had the same voice for the computer on his cruiser.

Yokohama Decepticon Secret Base
Through the machinations of Tarantulas, NAVI-ko was "warped" into a body of her own, which transformed into a dolphin. She debuted her new form to the bemused Megatron as she presented him information (secretly provided by Tarantulas) on "Nemesis Prime", an evil clone of their ancestor, Optimus Prime. Megatron wanted to add Nemesis Prime to his own forces, so he sent NAVI-ko back in time via a transwarp portal to Doctor Arkeville's Decepticon Base in Yokohama, Japan, in the year 2014 where Nemesis Prime had been detected.

Once in 2014, NAVI-ko located Nemesis Prime as Doctor Arkeville and Yokohama Prime fought over whose cookie would activate the clone. NAVI-ko claimed Nemesis Prime for herself with her Yokohama Decepticon Cookie. Mach Five Racing Prime, Yokohama Prime, and Kawasaki Prime teamed up to fight Nemesis Prime, but they were blasted away, and NAVI-ko met with the clone after, pointing out the nearby Transformers Expo. She bore witness to Nemesis Prime fighting the Autobots within the Expo and Nemesis's seeming sacrifice to save Yokohama from the explosive interaction of the Dark Energon within himself and the artifacts stored in the Expo—events that Tarantulas sought to bring about as an agent of Unicron. NAVI-ko was saddened by her comrade's death, only for "Yokohama Convoy" to awaken and flirt with her. NAVI-ko didn't have time to respond as Megatron ordered her back to base after the failure of their plan.

Transformers Legends comic
NAVI-ko in her dolphin body was among the evil female Transformers who appeared in Tigatron's dream, fighting a group of heroic female Transformers in a bid to kidnap Tigatron.

Foreign names

 * Japanese: NAVI-ko (ナビ子 Nabi-ko)