The Omnibots are proto-Triplechangers, like Tracks -- while they don't have a completely unique third mode, they do have an attack-mode extension of their vehicle mode. The primary Omnibots are Camshaft, Downshift, and Overdrive.
The Omnibots
History[]
Canonical/Pre-MUX/Theme History:[]
The Omnibots were active on Cybertron during the Ark's four-million-year sleep, and only traveled to Earth after their reactivation.
Shattered Glass Universe[]
The primary Omnibots in the Shattered Glass Universe are Camshaft, Downshift, and Overdrive.