One of Awakusu-kai's executives and also one of the youngest (about 30). He's unique among the yakuza members featured in this series in that he always uses the honorific speech (except for when he is talking to his subordinates).     

He is depicted as representative of the "Intelliyakuza", who rely less on violent methods and more on information (intelligence) and financial manipulation for their income. He is a master of aikido and a fan of Hijiribe Ruri (according to Kazamoto). Within Awakusu-kai, he is also seen as the person responsible for dealing with Orihara Izaya, the information broker.

In Tokyo's downtown district of Ikebukuro, amidst many strange rumors and warnings of anonymous gangs and dangerous occupants, one urban legend stands out above the rest—the existence of a headless "Black Rider" who is said to be seen driving a jet-black motorcycle through the city streets. 
Ryuugamine Mikado has always longed for the excitement of the city life, and an invitation from a childhood friend convinces him to move to Tokyo. Witnessing the Black Rider on his first day in the city, his wishes already seem to have been granted. But as supernatural events begin to occur, ordinary citizens like himself, along with Ikebukuro's most colorful inhabitants, are mixed up in the commotion breaking out in their city. 
(Source: MAL Rewrite)

__Height:__ 173cm
__Hobbies:__ baseball, bicycling, golf

Houchuu Ootsuka is a Japanese voice actor and narrator affiliated with the talent management firm Crazy Box. 

He is best known for his roles as the voices of Kyao Mirao in Heavy Metal L-Gaim; Yazan Gable in Mobile Suit Zeta Gundam; Akira Sendō in Slam Dunk; SignalMan in Gekisou Sentai Carranger; Imagin, Deneb in Kamen Rider Den-O, Abuto in Gintama, Makoto Sōda in Captain Tsubasa and Jiraiya in Naruto. He is also known for dubbing for Jean-Claude Van Damme, Donnie Yen (especially in Ip Man series), Jeff Goldblum, Ray Liotta, Tim Robbins, John C. McGinley, Brent Spiner, Robert Patrick and many more. He was also the first dubbing voice actor of Kiefer Sutherland and Christopher Lambert in their early days. 

Daniel E. Woren (Born in San Diego, California) is a voice actor. Woren is a huge fan of the San Diego Chargers and also comes from that area. As well as being a voice actor, Dan Woren also has several live-action roles in the Power Rangers series and numerous video game roles such as the Narrator in the Heroes Chronicles series.  (Source: Wikipedia)

“6 Months Later…We haven’t changed at all… or it seems….” Half a year after the turmoil that rocked the entire city of Ikebukuro— Peace has once again returned to the city and people are living each day normally. The high school students enjoy their days of youth as the strongest and most dangerous man of Ikebukuro works diligently. The informant plots a new scheme and the headless rider is pursued by the cops as she rides through the night…But soon this normal will be cut short by the abnormal. Slowly but surely, the unknown will seize the city and face an all new storm. 
 
(Source: Aniplex)

The second part of Durarara!!x2 
 
In Ikebukuro, the lives of its citizens continue intertwining with each other as if their fates are predestined. Mikado Ryuugamine is now one step closer to his goal of living an exciting life, and in turn, delves deeper into the darker side of Ikebukuro. After gaining absolute control over a former rival, he uses his newfound power as he pleases, purging the Dollars from the inside to mold it into the ideal organization. This proves to be as challenging as it sounds as Mikado must now deal with unwanted outside interference, most notably a re-emerging and dearly missed friend. Meanwhile, Izaya Orihara still has some schemes up his sleeve, although a rival information exchange center has proven to be quite the hindrance, lurking within everyone’s favorite downtown district. Undoubtedly, sooner or later, chaos will strike again. 
 
(Source: MAL Rewrite)

THE GOOD, THE BAD, AND THE DOWNRIGHT WEIRD. The Ikebukuro district in Tokyo is full of interesting people. A boy longing for the extraordinary. A hotheaded punk. An airheaded pseudo-stalker. An information broker who works for kicks. An underground doctor who specializes in truly desperate patients. A high school student infatuated with a monster. And a headless rider on a pitch-black motorcycle. Their story may not be a heartwarming one, but as it turns out, even weirdos like these sometimes fall in love. (Source: Yen Press)

Two extra DVD episodes of Durarara!! Episode 12.5 
Happens between episodes 12 and 13. A UFO is supposedly spotted in Ikebukuro, but what is it really? Episode 25 
Happens after episode 24, the final episode. Shizuo's brother hosts a TV special downtown, but his life is apparently in danger.

Half a year after the turmoil that rocked the entire city of Ikebukuro. 
 
Peace has once again returned to the city and people are living each day normally. The high school students enjoy their days of youth as the strongest and most dangerous man of Ikebukuro works diligently. The informant plots (or plans) a new scheme and the headless rider is pursued by the cops as she rides through the night... But soon this normal will be cut short by the abnormal. Slowly but surely, the unknown will seize the city and face an all new storm. 
 
(Source: Aniplex USA)

Haruya Shiki