Sonic the Hedgehog

"The world's fastest hedgehog, running as fast as he can to stop the Hard Boiled Heavies (HBH) and thwart Dr. Eggman's diabolical plans."

- Sonic Mania's description manual. Sonic the Hedgehog is the eponymous protagonist who is a blue anthropomorphic hedgehog with bright red sneakers and various quills. He is a born hero who got teleported to save an alternate timeline with his other counterpart. After appearing back in his home world, Sonic sees the evil doctor, Dr. Robotnik, is back up to his wrongdoings. It's up to him again to defeat Dr. Robotnik from disturbing the peaceful animals and capturing the Chaos Emeralds.

Sonic Generations
At first, Sonic was a small protector of his home, Green Hill and other zones, like Angel Island. He was running around Green Hill. He hears a rumble, but shrugs it off. Suddenly, the Time Eater causes Sonic to travel dimensions.

Later, his modern counterpart is having a birthday party, which he is celebrating with all his friends. But the Time Eater also arrives. It opens various portals and sucks each friend into it. The modern Sonic tries to stop him, but gets hit senselessly onto the ground.

Classic Sonic eventually teams up with Modern Sonic, defeating the Time Eater in their super forms. With a last high-five, he and Classic Tails (who also was involved with the trouble) travel back home.

Sonic Forces
When Chaos starts to attack Tails and he begs for Sonic's help, Classic Sonic comes back into action, via a portal from the Phantom Ruby. After saving the Modern Tails, Tails recognizes the counterpart of his Sonic from last time. Tails convinces him to team up so they can defeat the villain Infinite.

When Infinite and Dr. Eggman (Modern) hatch a plan and Infinite leaves, Sonic angrily jumps on Dr. Eggman's Egg Mobile. Eggman tries to run away but Classic Sonic follows. After "defeating" him, Sonic and Tails go to the Resistance, meeting his modern counterpart again.

Moments later, Sonic and Modern Sonic, alongside the "Avatar", charge at Dr. Eggman's new Death Egg Robot, powered by the Phantom Ruby. After pledging a Triple Boost on the robot, it gets defeated. This results in Sonic saying his last goodbye.

Sonic Returns
Sonic is back on Angel Island. He looks around in confusion, and then gets more confused seeing the gaping holes in the ground. He then looks up, only to see Dr. Robotnik is up to his evil shenanigans again, capturing the peaceful Flickies. He decides to charge after him.

He lands and views the capsule ahead of him. He steps and almost gets stabbed by various spikes. He luckily makes it onto the capsule, rescuing the Flickies, but gets shot off by the spring going loose. Underneath the panel of the spring, which blasted off of it, appears a face of Dr. Robotnik's on the spring itself. Just when he didn't expect it, Sonic got trapped, hanging upside down by one of Robotnik's traps. Spikes appear under his head and the capsule turns into a bomb. Dr. Robotnik appears behind the bomb, uncontrollably laughing at the hedgehog. Sonic feels irritated. Just about when Robotnik went to victoriously leave, Sonic pulls out a Chaos Emerald. Robotnik tries to grab it, but Sonic holds back. Robotnik turns the other way, but gets trapped by the same device he used to do so by Sonic. Sonic laughs. Sonic kicks Robotnik's hand away from the Chaos Emerald and gets himself out of the trap with the help of some Flickies. He waves at them and is about to leave Robotnik with the bomb, still ticking down. Robotnik uses his "Puppy Eyes" tactic to win over Sonic's guilt. Sonic walks back to the hanging doctor, annoyed, but then Robotnik's device falls out of his pocket. Sonic is skeptical and reads what's on it. Sonic reads that Robotnik is planning to possess the Chaos Emeralds' power again. With a mad face, Sonic punches the bomb, making in tick from 5 seconds. He runs off, leaving Robotnik in a blast.

Sonic and Tails
Whilst Tails works on his Tornado bi-plane, Sonic dashes on the wing of the plane, giving a wink at him. He hands over the device Robotnik used to Tails. Then, a quake takes place and Sonic's curiosity rises up. A smoke cloud can be seen in the distance, Sonic runs at it. He discovers Eggman uses his Egg Mobile with giant drill arms to dig up a Chaos Emerald. After the "Eggman" notices Sonic, Sonic zooms at him, only to get hit right in the kisser and losing a couple rings.

He lands back on the beach with an injured/sandy face. He looks up to Tails, who lends a hand out. Sonic grabs it and they both go back to the mad driller.

Sonic attacks Robotnik from behind. As he tries to attack Sonic, Tails does so too from his other end of the mobile. Robotnik gets beaten up rapidly and drills into the ground, destabilizing Sonic's balance. Tails saves him in the nick of time before getting drilled on. Mid-air, Sonic and Tails do a special spin onto Robotnik, destroying his machine. He blasts off from an explosion and Sonic fist bumps Tails, in honor of their teamwork. He clings his green emerald together with the emerald Tails found and laugh in the end.

Mighty And Ray
In the fourth part, Sonic and Tails storm off to Robotnik's Lab, expecting to kick his butt and bring the emeralds back into place. Little does Sonic know, Robotnik knows he comes near.

Metal Mayhem
He arrives in the laboratory, sliding to a stop. He looks around, skeptical of the building. He doesn't see anything wrong, until Metal Sonic lands between the two heroes. They get frozen in a Freeze Box, Metal then drops them down, making them release the emeralds. Sonic turns furious, yet also urging for a fight. Thinking this will be a piece of cake, and doing a Super Peel Out. He gets dragged down to the wall of the lab. He struggles to keep Metal away, pushing him against the wall. Then, Mighty and Ray walk in the building. Sonic confusedly looks at the duo. Mighty then punches Metal out of Sonic's sight. He shows a thumbs up to Mighty and a thumbs down to Metal and Robotnik. Sonic and the team charge at Metal. Sonic spins into Metal, but gets powerful blow right back at him. Sonic and Tails, both injured, come to an agreement to shut him down somehow. Sonic starts spinning around him, confusing the badnik. When loading is done, Metal freezes in one of the same boxes. Sonic snickers. For a finishing blow, Sonic spins right into Metal. But the Master Emerald shows up beneath him. But then another unexpected arrival shows up. Knuckles fiercely punches Metal off of it. After Knuckles casually walks out of the lab, Sonic shrugs and everybody gets a Chili Dog.

Appearance
Sonic is a blue anthropomorphic hedgehog with a total of six quills, two back spines and one pointy, yet small tail. He has an conjoined eye and black dotted pupils. He has bright red shoes with a white strap on it, a yellow buckle and a white pair of socks to finish it off. He also has a small stubby nose and a peach-colored muzzle, belly and arms.

Trivia

 * Sonic is drawn by the talented Tyson Hesse, whom also animated the Sonic Mania intro video.
 * Modern Sonic is also drawn in Hesse's style. Modern appears in another series (ALSO made by Hesse) called Team Sonic Racing: Overdrive