
While he may not be the most intelligent of the Dinobots, Sludge more than makes up for it with his courage and good cheer! His positivity can inspire the other Dinobots to keep fighting together even at their lowest points.
He can also combine with his fellow Dinobots to form the mighty Volcanicus!
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Fiction[]
Cyberverse cartoon[]
- Voice actor: Marc Thompson (English)
Eons ago, Sludge's home planet received Grimlock's transmission from earth with his dinosaur comrades. His whole world decided to imitate Grimlock and his friends, and took on dino modes, with Sludge taking the form of a Brontosaurus. At some point, Sludge and the other Dinobots fell under the leadership of Tiny Arms, but when their planet was attacked by the Immobilizer Gang, Tiny Arms did not survive. Sludge and the other Dinobots swore revenge on The Immobilizer Gang and followed them to Cybertron.

Upon landing on the time-locked planet, the Dinobots attempted to figure out a plan to stop The Immobilizer Gang, with Sludge repeatedly suggesting the Dinobots pound them. As they were arguing over what to do, they were greeted by a disgruntled Grimlock who believed them to be the ones who froze the planet in time. Grimlock fought with Sludge and the other Dinobots, until Swoop recognised him as the bot that had inspired their dinosaur modes.
After Sludge and the other Dinobots explained the situation to Grimlock, he agreed to team up with them to defeat the Immobilizer Gang, however he refused to let any of them join him in fighting them. When Grimlock appeared to be having difficulty in fighting The Immobilizer Gang, Sludge suggested the other Dinobots help him, and the group rushed in to aid Grimlock. Unfortunately the Dinobots were forced to retreat in Grimlock's shuttle, a result that Grimlock blamed the other Dinobots for. The ensuing disagreement caused the shuttle to lose control, causing all the Dinobots to be thrown to the back of the ship, along with the Enigma of Combination. This caused the Dinobots to combine into Volcanicus, but this was short lived as the combiner's size broke the shuttle from the inside, causing them to fall to the ground and split back into their components.
Sludge and the other Dinobots pondered over this occurrence, to learn that it was a result of their contact with the Enigma of Combination. They decided to try to combine again and all took hold of the Enigma to form Volcanicus once again. They marvelled at their own might, only to lose balance on their first step and fall over, once again splitting into their components. Sludge remarked that they should do it again and the Dinobots concluded that with some training they could use their combined form to defeat the Immobilizer Gang.
After learning to walk, Volcanicus began their training on an obstacle course designed by Grimlock. However, Volcanicus' lack of coordination and experience lead to them failing the obstacle course several times until Grimlock decided their endeavour was hopeless. He told the other Dinobots to remain behind while he took care of everything, but Sludge tried to follow him regardless. Grimlock told him that he and the other Dinobots simply weren't ready, but Sludge still believed in the team, reminding them that they still had "courage and good cheer." He and the other Dinobots began to chant the phrase until Grimlock agreed to try the obstacle course one last time.
Volcanicus gave it their all and succeeded in completing the obstacle course. In their celebration, they discovered that they also could a produce a sword from their back. The Dinobots then set to work on building a shield to protect them from the Immobilizer Gang's time blaster. Upon its completion, Volcanicus was very excited to have an amazing shield to match their cool sword.
Volcanicus made their way to Immobilizer Gang, charging at them while Soundblaster was using the infinite resonator on Soundwave. They demanded the Immobilizer Gang fix Cybertron, but Soundblaster refused and tried to use the time blaster on them, which their shield succeeded in blocking. The gang attacked, but Volcanicus soon defeated them and trapped them under their own hovercraft trailer. Volcanicus celebrated winning their first battle and did a little dance.
They then separated and the Dinobots demanded that the Immobilizer Gang restore Cybertron, only for the gang's boss, Trypticon to arrive on the scene. He fired the mercenaries for their failure and then attempted to hire the Dinobots instead, telling them that together they would travel the universe and attack helpless planets. Sludge expressed his enjoyment of travel which Snarl berated him for. The Dinobots then refused Trypticon's offer, and combined once again to defend their world from him.
Trypticon blasted Volcanicus with fire, but Volcanicus absorbed the heat and blasted it back at him with their sword. The two then fought, with Trypticon soon landing a hit that caused Volcanicus to separate. The Dinobots quickly recombined and then climbed onto Trypticon's back. The then stabbed him at the base of the neck in Tiny Arms' name, causing him to collapse. Volcanicus did another victory dance, but Trypticon soon woke up and Volcanicus was thrown off him, separating back into the Dinobots who all ran while Trypticon blasted at them.
Grimlock called the Dinobots back together after Swoop found the time blaster. They combined and made their way towards it while Trypticon continued to attack them. They grabbed a hold of the time blaster and after some difficulty with the trigger, managed to shoot Trypticon with it, freezing him in time. Volcanicus then separated and Grimlock complimented the other Dinobots and invited them to his after peace treaty signing soirée. The Dinobots then unimmobilized Wheeljack, who then unimmobilized the rest of Cybertron.
Sludge and the other Dinobots then joined in on the peace treaty celebrations, their cheering leading them to combine once more. After a moment of surprise, the other cybertronians joined in cheering with Volcanicus. The Immobilizers
When Cybertron was threatened with imminent invasion from an unknown enemy, Sludge and the other Dinobots burst into a meeting of the higher-ranked Autobot/Decepticon forces to offer enthusiastic support, but they were a little too annoying and shooed away. Sludge and the other Dinobots continued across the streets of Iaconus to interrupt other Cybertronians with offers of seeing them combine into Volcanicus.
After the unknown enemy revealed itself to be Decepticon supersoldiers, Wheeljack armed Sludge and the other Cybertronians with various gadgets to incapacitate the invaders, but the supersoldiers were able to teleport themselves out of capture. Once the mastermind behind it all was revealed to be Tarn, a Decepticon supersoldier who deceived his way into nabbing the Cortex Helm, Sludge and the Dinobots helped battle the combined army of regular Decepticons and supersoldiers. As Volcanicus, they provided cover to allow their fellow Autobots to escape.
Sludge retreated with the other Autobots to the Monsterbot underworld to regroup. Ultimately, both Autobots and Decepticons turned on Tarn and his supersoldiers, with Sludge combining with his compatriots to form Volcanicus once more, and peace was restored to Cybertron. Sludge was later present at Soundwave's wake following his heroic sacrifice. The Perfect Decepticon
Toys[]
Cyberverse[]

Oh ee ay, TAILSTICK! Oh ee oh, TAILSTICK!
- Dinobot Sludge (Ultra Class, 2021)
- Accessories: Staff weapon, dinosaur head/neck
- Action Attack: "Blaster Fire Fury"
- Released in the eleventh wave of Bumblebee Cyberverse Adventure Ultra Class figures, Sludge is a Voyager Class-sized mold that transforms into a robotic Brontosaurus. He features spring-loaded Energon armor in robot mode, which flips out over his head upon pulling down his backpack. He comes slightly disassembled in the package, requiring you to attach the beast mode head/neck assembly. His beast mode tail becomes a staff weapon for robot mode.
- Bumblebee Cyberverse Adventures Ultimate Class Volcanicus is a big and simple toy that transforms from robot mode to a dragon-esque beast mode and features an Energon Armor gimmick. Sludge is represented as possibly the arms of the combiner, but the toy can not be disassembled into its individual components.