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Hero Overview

So get yourselves to the bathroom and brush those teeth, boys and girls. Cause a whole load of trouble is heading your way!
~ Professor K to the player

DJ Professor K (better known as just Professor K) is the tritagonist of the Jet Set Radio video game and the narrator of Jet Set Radio Future.

Professor K is an upbeat DJ who recruits other members to join his gang, known as the GG's. He cares deeply about his members and tries to encourage them to spread their talents though graffiti.

Professor K is voiced by Billy Brown. 


Jet Set Radio

In Jet Set Radio, Professor K is one of the main characters and appears in most of the cutscenes, which he can be seen talking to the player. He can be heard over the radio when you are playing the game, and he also narrates most of the game, directly through the cutscenes.

At the end of the game, someone can be heard telling him that the game never actually happened, and he vaguely tells him “okay, okay, sure.”

In Jet Set Radio Advance, after beating the final level, Professor K can become a playable character.

Jet Set Radio Future

In Jet Set Radio Future, he plays the role of the narrator and the comic relief character during the cutscenes.

In this game, he changes his appearance completely.

He contacts the GG's with mission information while out on the streets. At one point, he gets more directly involved in the story's events when he is kidnapped by the Golden Rhinos.

SEGA Superstars Tennis

Professor K can be seen on the Tokyo-To amp cheering the players, and playing with records as well.

Sonic & All-Stars Racing Transformed

During the Graffiti City race, Professor K can be heard narrating the race.

Professor K is also mentioned by Beat when he either wins or achieves first place during the race.

SEGA Heroes

Professor K is a legendary blue playable hero in this game. He was achieved after unlocking 65 Professor K shards, but after the game started to shut down, he was reduced to 15 shards, making him easier to achieve.

Professor K’s copycat can also be versed.


Professor K is upbeat, chill, and coincidentally happy at most times. He deals with situations with the upmost best and positive attitude, even though he is a criminal.

Professor K is always looking to make new friends, which he does when recruiting new members to join his gang, the GG’s.


  • Professor K is one of the two Jet Set Radio characters with known voice actors, the other being Tab.
  • Professor K is only playable in Jet Set Radio Advance.
  • Professor K is his gang name, as he is not a professor and hasn’t graduated from high school. His real name, like Gum and Beat, and unknown.


           Jet Set Radio.png Heroes

Main Characters
Beat | Gum | DJ Professor K

Jet Set Radio
Beat | Gum | DJ Professor K | Tab | Garam | Mew | YoYo | Piranha | Soda | Pots

Jet Set Radio Future
Beat | Gum | Tab | Garam | Mew | YoYo | Piranha | Soda | Pots

SEGA Superstars Franchise
Amigo | AiAi | Opa-Opa | Big the Cat | Ulala | Sonic the Hedgehog | B.D. Joe | MeeMee | NiGHTS | ChuChus | Alex Kidd | Billy Hatcher | Beat | Banjo | Kazooie | Gum | Pudding | Bonanza Bros. | Tails | Amy Rose | Wreck-It Ralph | Vyse | AGES | Knuckles | Shadow | Joe Musashi | Ristar | Ryo Hazuki

           Sega Heroes.png Heroes

Yellow Heroes
Shenhua | AiAi | Werebear | Charmy Bee | Alis Landale | Gus | ChuBei | Cream | Alicia Melchiott | Joe Musashi | Thomas Rogan | Tails | Goro Majima | Kage-Maru | Adam Hunter

Blue Heroes
Gena | G | Rouge | Ax Battler | Baby | DJ Professor K | Sonic | Ageha | Rolf | Silver | Chuih | Axel Stone | Kazuma Kiryu | Sarah Bryant | Ryo Hazuki

Green Heroes
Gum | Weredragon | Amy Rose | Vector | Axel | ChuBach | Big | Hotsuma | Ren of Heavens | Welkin Gunther | GonGon | Gilius | Akira Yuki | Taiga Saejima

Red Heroes
Werewolf | Beat | B.D. Joe | Tom Johnson | ChuPea | Blaze Fielding | Hibana | Espio | Largo Potter | Pai Chan | Knuckles | Shun Akiyama | Tyris Flare | Shadow

Other Characters
Metal Sonic | ChuChus | Cheese

            Sonic the Hedgehog logo.png Heroes

Main Universe
Team Sonic
Knuckles the Echidna | Miles "Tails" Prower | Sonic the Hedgehog
Team Rose
Amy Rose | Big the Cat | Cheese | Chocola Chao | Cream the Rabbit | Emerl | G-merl | Omochao | Vanilla the Rabbit
Gerald Robotnik | G.U.N. Commander | G.U.N. Soldiers | G.U.N. Robots | Maria Robotnik
Team Dark
E-123 Omega | Rouge the Bat | Shadow the Hedgehog
Chaotix Detective Agency
Charmy Bee | Espio the Chameleon | Vector the Crocodile
Babylon Rogues
Jet the Hawk | Storm the Albatross | Wave the Swallow
Sol Dimension
Blaze the Cat | Marine the Raccoon
Coconut Crew
Colonel | Daikun | Kylok | Muzy | Setter | Tabby
Avatar | Caliburn the Sword | Chip | E-102 Gamma | Lumina Flowlight | Princess Elise | Professor Pickle | Shade the Echidna | Shahra | Silver the Hedgehog | The President | Tikal the Echidna | Void | Wisps | Yacker

Classic Universe
Amy Rose | Bark the Polarbear | Bean the Dynamite | Bomb | Heavy | Honey the Cat | Knuckles the Echidna | Mighty the Armadillo | Miles "Tails" Prower | Ray the Flying Squirrel | Sonic the Hedgehog

Archie Universe
Freedom Fighters
Amy Rose | Antoine D'Coolette | Big the Cat | Bunnie Rabbot | Cheese the Chao | Cream the Rabbit | Dulcy the Dragon | Miles "Tails" Prower | Nicole the Holo-Lynx | Rotor the Walrus | Sally Acorn | Sonic the Hedgehog
Angel Island Citizens
Knuckles the Echidna | Relic the Pika | Gixit
Chaotix Detective Agency
Charmy Bee | Espio the Chameleon | Vector the Crocodile
Mighty the Armadillo | Ray the Flying Squirrel
Team Dark
E-123 Omega | Rouge the Bat | Shadow the Hedgehog
Time and Space Travelers
Blaze the Cat | Marine the Raccoon | Silver the Hedgehog
Ben Muttski | Coral the Betta | Dulcy the Dragon | Gemerl the Gizord | Honey the Cat | Mina Mongoose | Pearly the Manta Ray | Professor Pickle | Razor the Shark | Remington | Uncle Chuck

Sonic Boom
Amy Rose | Buster | Cyborg Amy | Cyborg Knuckles | Cyborg Sonic | Cyborg Tails | FriendBot | Knuckles the Echidna | Miles "Tails" Prower | Perci | Shadow the Hedgehog | Sonic Cookie Eggman | Sonic the Hedgehog | Staci | Sticks the Badger | Vector the Crocodile | Zooey

IDW Universe
Team Sonic
Amy Rose | Knuckles the Echidna | Miles "Tails" Prower | Sonic the Hedgehog
Chaotix Detective Agency
Charmy Bee | Espio the Chameleon | Vector the Crocodile
Time and Space Travelers
Blaze the Cat | Silver the Hedgehog
Team Dark
E-123 Omega | Rouge the Bat | Shadow the Hedgehog
Other Members and Allies
Belle the Tinkerer | Cheese the Chao | Cream the Rabbit | Jewel the Beetle | Lanolin | Tangle the Lemur | Vanilla the Rabbit | Whisper the Wolf
Big the Cat | Mr. Tinker | Wisps

King Acorn | Knuckles the Echidna | Manic the Hedgehog | Sonia the Hedgehog |

Christopher Thorndyke | Chuck Thorndyke | Cosmo the Seedrian

Crazy Carl | Longclaw | Maddie Wachowski | Miles "Tails" Prower | Sonic the Hedgehog | Tom Wachowski | Wade Whipple