Affiliation: Autobot
Purpose: Autobot leader
Transforms into: Peterbilt truck
Strengths: Energy rifle, retractable energy blades, arm cannons, wise nobility, leadership skills
Weaknesses: Protecting frail humans Sam Witwicky (Shia LaBeouf) and Mikaela Banes (Megan Fox), putting himself in danger for his fellow Autobots

Affiliation: Decepticon
Purpose: Giant wrecking ball
Transforms into: All of the Constructicons
Strengths: Vortex sucking power, grappling hooks for scaling pyramids, combined building skills of seven Constructicons
Weaknesses: Massive size prevents him from standing upright, strangely resembles a robot gorilla