Sonar's superior senses allow her to be the best reconnaissance agent the Maximals have. Her unchecked ferocity, however, make her a danger to both sides.
Universe: The Wreckers
Sonar was summoned by the Oracle, along with the Wreckers, to embark on a mysterious mission. As the Wreckers were battling their way onto a secret Autobot shuttle, Sonar used a sonic attack to bust up some Vehicons. Shortly after lifting off from Cybertron, however, she was attacked by Devcon. The former Peace Marshal calmed down, and Sonar moved to another part of the shuttle. An explosion of unknown source ripped through the craft. Packrat, in an attempt to save the fore of the ship, separated it from the aft section. Unfortunately, this meant sacrificing Sonar, Spittor, and the Deployers. Rodimus was very displeased to lose his comrades.
IDW Beast Wars comics
Sonar was one of the protoforms jettisoned from the Axalon on prehistoric Earth. She was activated and put in chronal phase by Razorbeast at Magmatron's request, but was protected from Magmatron's Predacon shell-program by Razorbeast's viral code.
Accompanied by Air Hammer, Night Glider, and Prowl, Sonar sped towards Razorbeast and the small group of new Maximals accompanying him. She and a phalanx of other Maximals finally reached them, just in time to fight off an army of Predacons.
- Sonar (Basic Transmetal 2, 1999)
- Sonar transforms into a grey Transmetal 2 bat. Left wing/arm has a flip-out blade weapon. In robot mode, her beast-mode hindlegs can flip down to give her two pairs of arms.
- Sonar's toy bio, lacking pronouns, is effectively genderless. The 3H comics seized on this opportunity to add another female Transformer to the ranks. The IDW Beast Wars Sourcebook followed suit.
- Strangely, none of her comic appearances seem to show her original, four-armed robot mode shown on her box art and instructions. Instead, they just fold her beast mode legs so that they rest on her shoulders, giving her a kibble necklace.