SCR-HD is the main antagonist of Sonic Riders: Zero Gravity.

In the Story

He is the leader of the MeteoTech robots created by Dr. Eggman, who intended to use them to conquer the world with the power of the five Arks of the Cosmos. He put the master ark - the greatest of the five - in the mother computer, connecting the robots to this ark. However, Eggman began to lose control of the robots, who rampaged on their own.

SCR-HD's goal was to collect all five Arks to open a black hole, which would engulf the entire world. While confront Amy Rose and Storm the Albatross, he mysteriously exploded, allowing Storm to take the Ark that was inside him. However, SCR-HD was not destroyed in this explosion, though he was severely weakened. He was able to get all five Arks once Jet, Wave, and Storm had collected them all, and opened the black hole, merging with the computer's core into Master Core: ABIS.

While Eggman escaped the tower, Sonic, Tails, Knuckles, Amy, Jet, Wave, and Storm engaged Master Core: ABIS in a death race at Babylon Garden, where the black hole was opened at. In the end, Sonic defeated ABIS and knocked him into the black hole, destroying him and closing the black hole.

Powers and Abilities

Before gathering the Arks, SCR-HD was an ordinary robot that was a leader to the other MeteoTech robots. While racing, he can transform his body into a wheel, as if were an extreme gear. Like the other characters in the game, SCR-HD can use the Arks (which is stored inside of his body) to perform Gravity Control and Gravity Dive.

He functions as a Flight-type character. He however does not have any unique abilities nor does he have any Gear Parts.

After obtaining all 5 Arks and merging into the artificial black hole/units, thereby transforming into Master Core: ABIS, he can manipulate gravity on a far greater scale and can use it over an immense radius. ABIS can shoot electric energy balls and hurl meteorites down, creating a large explosion on impact. It can teleport over short distance.


  • The name "ABIS" is derived from the term "abyss", referencing its symbiotic relationship with the black hole's core.
  • SCR-HD (at least Master Core: ABIS) is the second robot antagonist to be faced by Sonic and his friends, the first being Metal Overlord.

           Sonic Villains

Eggman Empire
Dr. Eggman | Orbot | Cubot | Metal Sonic | Mecha Sonic | Silver Sonic | Mecha Knuckles | Metal Knuckles | King Boom Boo | Badniks | Tails Doll | E-100 Alpha | E-101 Beta | E-104 Epsilon | EggRobo | Eggman Enterprises | MeteorTech | SCR-HD | Master Core: ABIS | Time Eater | Infinite

Team Dark
Shadow the Hedgehog | Rouge the Bat | E-123 Omega

Babylon Rogues
Jet the Hawk | Wave the Swallow | Storm the Albatross

Eggman Nega's Forces
Eggman Nega | Metal Sonic 3.0

Deadly Six
Zavok | Zazz | Zeena | Master Zik | Zomom | Zor

Black Arms
Black Doom | Devil Doom

Nocturnus Tribe
Imperator Ix

Babylon Guardian | Bark the Polarbear | Bean the Dynamite | Bearenger the Bear | Biolizard | Black Knight | Captain Whisker | Carrotia the Rabbit | Chaos | Dark Gaia | Dark Gaia's Minions | Dr. Fukurokov | Erazor Djinn | Fang the Sniper | Fockewulf the Wolf | Iblis | Ifrit | Mephiles the Dark | Merlina | Scorpius | Shade | Sir Lancelot | Solaris | Wendy Witchcart