- Overhaul is an Autobot from the Cybertron portion of the Unicron Trilogy continuity family. Upon recieving a new body, he took the name Leobreaker.
Overhaul is an elder Autobot warrior, having fought alongside Optimus Prime during the Unicron Battles and Powerlinx Battles, and likely before that, as well. He is gruff and oftentimes confrontational, but exceptionally loyal to the Autobot cause. He says he prefers to work alone, but knows deep down the value of friendship and teamwork.
As Leobreaker, his gung-ho attitude is heavily amplified, but he's no longer so independent-minded. He's become fast friends with Snarl of the Jungle Planet, and has even gained his own personal Mini-Con attendants. He's even taken a shining to Earth team sports like baseball, possibly as a replacement for war. This new focus on teamwork does have its downside; he harbors a litlte bit of resentment that his "Savage Claw Mode" combination with Optimus might not be as strong as the "Sonic Wing Mode" the Autobot leader can form with Wing Saber.
- Japanese name: Jackshot / Ligerjack
- Hungarian name, as Overhaul: Generál (Generálozó in Ultimate Battle DVD)
- Hungarian name, as Leobreaker: Vastigris ("Iron-tiger")
Overhaul was one of the Autobots who went to Earth with Optimus Prime and his men in search of the Cyber Planet Keys. While on Earth he helped the other Autobots construct a base, and helped them battle the Decepticons until him and Landmine were sent to go to the Jungle Planet. But when Vector Prime opened a warp gate to the Jungle Planet he was shot by Thundercracker and was forced to close the warp gate, and Landmine was not able to make it though the gate in time which stranded Overhaul on the Jungle Planet without aid from another Autobot. While on Jungle Planet Overhaul meets up with Backstop, and Backstop tells Overhaul about Jungle Planet and it's ruthless dictator Scourge. After hearing about Scourge Overhaul goes to fight him and free the people of Jungle Planet from his ruthlessness. Overhaul fought Scourge sevarl times. In their last battle Overhaul managed to walk though Scourge's flame attack after learning how to resist it, and got a good hit Scourge; but then Megatron threw Snarl into Overhaul knocking him unto the ground. While Overhaul and Snarl were knocked on the ground Scourge attempted to kill Snarl for his betrayal, but before he could cut into Snarl with his axe Overhaul got in the way. While being continuously sliced in the back by Scourge, Overhaul managed to obtain power from the Jungle Planet's Cyber Planet Key and scan a new form which was a lion, tranforming himself into Leobreaker. Now Leobreaker, Overhaul saved Snarl and brought him to safety.
- Overhaul (Scout class, 2005)
- Japanese ID number: GC-05
- Accessories: Missile, Cybertron Autobot Cyber Key (Takara only), Jungle Planet Key (Hasbro only)
- Overhaul transforms into an off-road vehicle similar to a Humvee. Plugging a Cyber Planet Key into his robot mode back launches his chest-mounted missile (you can do this in car mode too, but the missile is blocked). In Japan, he came with a silver-bordered Cybertron Autobot Cyber Planet Key, but for his Hasbro release he came with a silver Jungle Planet style key, with the Key Code "s9d7" on the back. There are rumors that a later release of the Japanese version was changed to a Jungle key, but this has not been confirmed.
- Leobreaker (Voyager-class, 2005)
- Japanese ID number: GC-16
- Accessories: Tail-blade, Jungle Planet Cyber Key
- The Overhaul upgrade transforms into a mechanical lion (though in Japan he's called a liger) with electronic sound effects. Each forelimb/arm has a Cyber-Key-released spring-loaded claw, and his tail becomes a blade-whip for robot mode. He can also transform into "Savage Claw Mode", becoming a massive clawed arm that can attach to the Super-class Cybertron Optimus Prime and Megatron toys, usable on either side of their torsos.
- He comes with a silver-bordered Jungle Planet style Cyber Key; the Hasbro version has the Key Code "vg08" on the back.
- This mold is also used by Nemesis Breaker. It is also the visual model for the comic-only form of Generation 1 Razorclaw in the Beast Era.
- Leobreaker (Legends of Cybertron, 2005)
- This toy is a simplified version of the Leobreaker toy. Needless to say, it cannot combine with Optimus Prime.
- Overhaul (Starter Set, 2006)
- Attacktix ID number: TF19
- Faction: Autobot
- Class: Leader
- Special: Sacrifice - 14/26 (54%)
- Point Cost: 30
- Base Speed: 4
- Attack Type: Shooter (Energy Blast)
- Available only in the Transformers series 1 Starter Set, Attacktix Overhaul is very similar in stats and attacks to Excellion. Unlike Excellion, Overhaul can use his sacrifice power to return to play by taking the play of any Autobot figure, not just Trooper figures.
- Overhaul's 360 degree shoulder articulation (in addition to his waist and head) arguably gives this little figure more satisfying poseability than his larger brother. Okay, keep your shirt on. We said arguably.
- The original plans for Leobreaker involved a more coherent Savage Claw Mode arm design, complete with fingers and thumbs. But a variety of factors resulted in the simplified form, including rising petroleum prices.
- Additionally, one of the early prototypes featured a faux-SUV chest for Leobreaker, probably to link him more closely to his first body. Like the previously-listed changes, this was likely removed to lower the production cost -- or possibly it was discarded for other reasons.
- The television CGI model of Leobreaker used during the combiner sequence animation, as well as the representation of the combined arm mode is based upon a modified version of one of the original prototypes of Leobreaker, who, as mentioned above, had a much more complex and believable 'arm-mode'.
- Originally, Overhaul was going to be called Trailbreaker, in reference to the Generation 1 character of the same name. However, the trademark could not be secured for this, resulting in the name-change.
- In a related tidbit, the original naming idea was apparently to go from "Trailbreaker" to "Leobreaker". When they couldn't get Trailbreaker, it seems Hasbro considered naming Overhaul's lion form Overcast, as that name is listed as Leobreaker's American name in the Galaxy Force Phase Ignition guidebook. However, they ultimately kept the name Leobreaker.
- The combination sequence between Galaxy Convoy and Leo Breaker is a reference to the combination of Goldymarg and GaoGaiGar in the anime The King of Braves GaoGaiGar. The attack they perform appears similar to the Shining Finger from G-Gundam.
- Both of this character's bodies feature three claws extending from each wrist. This makes him Wolverine.