The Courageous Team: Leader-1 - (The leader of the Guardians. He is a brave leader who cares deeply about his people. He believes not one person should be in charge. He supports the democratic system of the Guardians. This led his former friend, Cy-Kill, to break away from the Guardians. He took command of the evil Renegades and became Leader-1's worst enemy. Turns into an F-15 fighter jet. Voiced by Lou Richards, Jr.), Turbo, Scooter, Path Finder and Royal-T
Small Foot - One of Leader-1's most trusted soldiers. A tracker, what she lacks in size she more than makes up for in heart and determination. Small Foot can often be seen kicking around with Scooter but she idolizes Leader-1 and is often found fighting by his side. Trouble often finds her wherever she is. Sometimes with all of her determination Small Foot becomes impulsive and eager to please the older and more experienced Guardian soldiers. Turns into a pickup truck. Voiced by B. J. Ward.
Peter Cullen and Frank Welker as Sticks 'N' Stones: An evil Rock Lord who seems to be a conjoined twinned Golem with Sticks as the right head and Stones as the left head (from the viewer's point). For comedic effect, the two heads (each voiced by a different actor - ironically, Cullen and Welker are arguably best remembered as the voices of Optimus Prime and Megatron, opposing leaders in the original Transformers cartoon) regularly argue with each other. the name derives from the old saying "Sticks and stones may break my bones but words will never harm me.".
Morgan Paull as Matt Hunter: A UNICOM astronaut and their liaison with the Guardians, Matt travels with Leader-1 to Quartex.
Leslie Speights as A. J. Foster: A UNICOM cadet kidnapped by Cy-Kill.
Ike Eisenmann as Nick Burns: A UNICOM cadet kidnapped by Cy-Kill.
Several other Gobots have cameo or walk-on scenes during the early stages of the film, including Fitor, Cop-Tur, Herr Fiend, Heat Seeker, Klaws, Sparky, Rest-Q, Dozer, Zeemon, Twin Spin, Twister and Stallion. In an odd animation error, Herr Fiend and Baron Von Joy's roles were reversed, with each Gobot fulfilling the other's role, and being referred to by name. This error is especially odd as it required several scenes of animation, yet the error is consistent throughout.
[*] Denotes that the figure was not released as part of Machine Robo. The figures with "MRT" designations were commissioned from Bandai by Tonka; the remainder of the figures unreleased in Japan were Machine Robo prototypes. The others, that are extras to the toyline, are Zod, Scales, the AM Radio Gobot, Laser Gun, Space Hawk, the Watch Gobots: Tic Toc and Gong, the Combiners: Puzzler (Crossword, Jig Saw, Pocket, Rube, Tic Tac and Zig Zag) and Monsterous (Fangs, Fright Face, Gore Jaw, Heart Attack, South Claw and Weird Wing), the Power Warriors: Courageous, Grungy and Nemesis, who was planned, but not released, the Secret Riders: Twister, Tork and Tri-Trak, the Dread Launchers: Chaos (Screamer), Re-Volt, and Traitor, the Boomers: Blast and Rumble and the Power Marchers: Hitch Hiker and Quick-Step.