Dinobots

The Dinobots (ダイノボット, Dainobotto), formerly the Lightning Strike Coalition Force, are a brutal commando unit of Autobots, who handle the jobs that other Autobots don't have the stomach for; equal to that of Wreckers at least. Openly critical of Optimus Prime's conservative tactics, the unit instead defers to their leader Grimlock, who isn't above defying his higher-ups if the need arises. One such belligerent, bullheaded, and rebellious action resulted in the team becoming captives of Shockwave, who subsequently experimented on the team by giving with new alternate modes based on dinosaurs and other prehistoric creatures, intending to turn them into mindless berserkers. The Dinobots managed to escape Shockwave's lab, and their mutual struggle to adjust to and understand their strange new forms has resulted in the team becoming more tight-knit than ever.

While they bear the Autobot insignia, calling them a bunch of violent and primitive loose cannons would be an understatement. Answering mostly to their animalistic rage and imbued with a range of combat abilities, it would take a serious display of superior might for these guys to follow anyone else's lead.

"Shockwave and the Deceptcions were the ones who turned us into these monsters. But someday, They are all going to suffer for making us into what we are!"
 * —Grimlock

List of Dinobots
The Dinobots include:
 * Grimlock (Voice Actor: Gregg Berger) - Leader; Beast Mode: Tyrannosaurus Rex
 * Swoop (Voice Actor: Mark Stewart) - Bombardier; Beast Mode: Pteranodon
 * Snarl (Voice Actor: Travis Willingham) - Warrior; Beast Mode: Triceratops
 * Slug (Voice Actor: Sam Riegel) - Warrior; Beast Mode: Stegosaurus
 * Sludge (Voice Actor: Frank Welker) - Warrior; Beast Mode: Apatosaurus
 * Scorn (Voice Actor: Peter Lurie) - Second-in-Command; Beast Mode: Spinosaurus
 * Slash (Voice Actor: Tom Kenny) - Scout; Beast Mode: Velociraptor
 * Strafe (Voice Actor: Wikipedia:) - Medic; Beast Mode: Herrerasaurus
 * Slog (Voice Actor: Wikipedia:) - Tactician; Beast Mode: Giganotosaurus
 * Saline (Voice Actor: Wikipedia:) - Medic; Beast Mode: Basilosaurus
 * Salvo (Voice Actor: Wikipedia:) - Logistician; Beast Mode: Liopleurodon
 * Sauron (Voice Actor: Wikipedia:) - Analyst; Beast Mode: Nyctosaurus
 * Scald (Voice Actor: Wikipedia:) - Brains; Beast Mode: Elasmosaurus
 * Scalp (Voice Actor: Wikipedia:) - Spy; Beast Mode: Stygimoloch
 * Schematic (Voice Actor: Wikipedia:) - ; Beast Mode: Technosaurus
 * Scimitar (Voice Actor: Wikipedia:) - ; Beast Mode: Elaphosaurus
 * Scoff (Voice Actor: Wikipedia:) - ; Beast Mode: Megolodon
 * Scorch (Voice Actor: Wikipedia:) - ; Beast Mode: Quetzacoatlus
 * Scrape (Voice Actor: Wikipedia:) - ; Beast Mode: Podekosaurus
 * Scratch (Voice Actor: Wikipedia:) - ; Beast Mode: Dunkleosteus
 * Screech (Voice Actor: Wikipedia:) - ; Beast Mode: Compasgnathus
 * Scrum (Voice Actor: Wikipedia:) - ; Beast Mode: Gastonia
 * Scud (Voice Actor: Wikipedia:) - ; Beast Mode: Anhaguera
 * Scupper (Voice Actor: Wikipedia:) - ; Beast Mode: Mosasaurus
 * Scythe (Voice Actor: Wikipedia:) - ; Beast Mode: Therizinosaurus
 * Skewer (Voice Actor: Wikipedia:) - ; Beast Mode: Pachyrhinosaurus
 * Shackle (Voice Actor: Wikipedia:) - ; Beast Mode: Chasmosaurus
 * Shade (Voice Actor: Wikipedia:) - ; Beast Mode: Pterodactyl
 * Shatter (Voice Actor: Wikipedia:) - ; Beast Mode: Shunosaurus
 * Shear (Voice Actor: Wikipedia:) - ; Beast Mode: Metriorynchus
 * Shiver (Voice Actor: Wikipedia:) - ; Beast Mode: Cryolophosaurus
 * Shred (Voice Actor: Wikipedia:) - ; Beast Mode: Masiakasaurus
 * Shriek (Voice Actor: Wikipedia:) - ; Beast Mode: Peteinosaurus
 * Shunt (Voice Actor: Wikipedia:) - ; Beast Mode: Styracosaurus
 * Singe (Voice Actor: Wikipedia:) - ; Beast Mode: Longisquama
 * Savage (Voice Actor: Wikipedia:) - ; Beast Mode: Zhejiangopterus
 * Sinus (Voice Actor: Wikipedia:) - ; Beast Mode: Dilophosaurus
 * Skim (Voice Actor: Wikipedia:) - ; Beast Mode: Rhamphorynchus
 * Skulk (Voice Actor: Wikipedia:) - ; Beast Mode: Parasauropholus
 * Skyve (Voice Actor: Wikipedia:) - ; Beast Mode: Caulkicepalus
 * Slab (Voice Actor: Wikipedia:) - ; Beast Mode: Edmontonia
 * Slam (Voice Actor: Wikipedia:) - ; Beast Mode: Ankylosaurus
 * Slap (Voice Actor: Wikipedia:) - ; Beast Mode: Gargoyleosaurus
 * Slather (Voice Actor: Wikipedia:) - ; Beast Mode: Carnotaurus
 * Slaughter (Voice Actor: Wikipedia:) - ; Beast Mode: Tapejara
 * Slayer (Voice Actor: Wikipedia:) - ; Beast Mode: Dracorex
 * Slice (Voice Actor: Wikipedia:) - ; Beast Mode: Icthyosaurus
 * Slobber (Voice Actor: Wikipedia:) - ; Beast Mode: Postosuchus
 * Sickle (Voice Actor: Wikipedia:) - ; Beast Mode: Arizonasaurus
 * Smack (Voice Actor: Wikipedia:) - ; Beast Mode: Titanosaur
 * Smash (Voice Actor: Wikipedia:) - ; Beast Mode: Amargasaurus
 * Smelt (Voice Actor: Wikipedia:) - ; Beast Mode: Vulcanodon
 * Smirk (Voice Actor: Wikipedia:) - ; Beast Mode: Psittacosaurus
 * Smite (Voice Actor: Wikipedia:) - ; Beast Mode: Pachycepholosaurus
 * Smolder (Voice Actor: Wikipedia:) - ; Beast Mode: Einiosaurus
 * Smother (Voice Actor: Wikipedia:) - ; Beast Mode: Lambeosaurus
 * Snag (Voice Actor: Wikipedia:) - ; Beast Mode: Helicoprion
 * Snipe (Voice Actor: Wikipedia:) - ; Beast Mode: Ceratosaurus
 * Snort (Voice Actor: Wikipedia:) - ; Beast Mode: Kentrosaurus
 * Snuff (Voice Actor: Wikipedia:) - ; Beast Mode: Desmatosaurus
 * Sortie (Voice Actor: Wikipedia:) - ; Beast Mode: Tupaxuara
 * Spear (Voice Actor: Wikipedia:) - ; Beast Mode: Dorygnathus
 * Spike (Voice Actor: Wikipedia:) - ; Beast Mode: Iguanadon
 * Spine (Voice Actor: Wikipedia:) - ; Beast Mode: Dimetrodon
 * Spiral (Voice Actor: Wikipedia:) - ; Beast Mode: Dimorphodon
 * Splice (Voice Actor: Wikipedia:) - ; Beast Mode: Hybrid
 * Spoiler (Voice Actor: Wikipedia:) - ; Beast Mode: Scutellosaurus
 * Spoor (Voice Actor: Wikipedia:) - ; Beast Mode: Baryonyx
 * Squall (Voice Actor: Wikipedia:) - ; Beast Mode: Plesiosaurus
 * Squawk (Voice Actor: Wikipedia:) - ; Beast Mode: Dsungaripterus
 * Stagnant (Voice Actor: Wikipedia:) - ; Beast Mode: Sarcosuchus
 * Stalker (Voice Actor: Wikipedia:) - ; Beast Mode: Monolophosaurus
 * Stash (Voice Actor: Wikipedia:) - ; Beast Mode: Alxasaurus
 * Stifle (Voice Actor: Wikipedia:) - ; Beast Mode: Archelosaurus
 * Stigma (Voice Actor: Wikipedia:) - ; Beast Mode: Ouranosaurus
 * Stomp (Voice Actor: Wikipedia:) - ; Beast Mode: Diplodocus
 * Storm (Voice Actor: Wikipedia:) - ; Beast Mode: Ampelosaurus
 * Strife (Voice Actor: Wikipedia:) - ; Beast Mode: Irritator
 * Striker (Voice Actor: Wikipedia:) - ; Beast Mode: Allosaurus
 * Strobe (Voice Actor: Wikipedia:) - ; Beast Mode: Gallodactylus
 * Sulphur (Voice Actor: Wikipedia:) - ; Beast Mode: Thalassodromedus
 * Sump (Voice Actor: Wikipedia:) - ; Beast Mode: Pentaceratops
 * Sunder (Voice Actor: Wikipedia:) - ; Beast Mode: Argentinosaurus
 * Suplex (Voice Actor: Wikipedia:) - ; Beast Mode: Struthiosaurus
 * Sweeper (Voice Actor: Wikipedia:) - ; Beast Mode: Tupandactylus
 * Swipe (Voice Actor: Wikipedia:) - ; Beast Mode: Temnodontosaurus
 * Synchro (Voice Actor: Wikipedia:) - ; Beast Mode: Ceresiosaurus
 * Syntax (Voice Actor: Wikipedia:) - ; Beast Mode: Saurapelta

History
In the waning days of the war on Cybertron, Grimlock and the rest of his squadron was assigned on a mission for reasons unknown, and heading to the Sea of Rust. Although the team smashed their way through Decepticons and a horde of Insecticons, they were eventually ambushed and overrun by Shockwave's Decepticon Combiners (Bruticus, Devastator, and Menasor). After this, the Decepticons took them to their chef scientist's laboratory at Kaon, where he performed traumatic and horrid experiments on them. Shockwave re-engineered their bodies so that they could transform into the alien creatures he had discovered while observing a primitive planet. He either unaware or unintentionally that his experiments changed him into an strong fighting machines while redirected their power, but intelligent, monstrous, less coherent, and emotionally stable than ever before. However, in spite of this, their spirits and wills as Autobots remained unbroken.

One day, Grimlock and the "Dinobots" (a re-branded quartet named by Swoop, after being inspiring the idea they were all now can change their forms into dinosaurs) was able to break free, stealing a Decepticon ship and escaped through the Decepticons' Warp Gate (based from the space bridge technology) to primitive planet Shockwave have been observing. At the same time during their escape, Grimlock stole a Power Core Generator — a piece of technology the Decepticons need to control their transwarp technology. They been chasing, searching, and hunting them down to get it back, ever since.