Major Jack Barbarossa Bancoran of the British MI6, nicknamed "Bishōnen Killer" for his ability to seduce young men with just his eyes. Women are also attracted to him, but the only woman he's shown even moderate interest in is Etrange, Patalliro's mother. Meeting Patalliro has changed his existence; after playing bodyguard to the most annoying person he's ever met, he's now living with Maraich, who tried to kill him, and their son Figaro. Bancoran is known for his blue eyeshadow (purple in Patalliro Saiyuki), his long black hair, and the fact that he never takes off his gloves, even in bed. His name comes from Henri Bencolin.

Patarillo! is set in a society much like ours in most ways, with one decided twist. The manga on which it is based is one of the much-read works produced for adolescent Japanese girls that features a healthy proportion of gay men and beautiful teenagers aka bishounen (beautiful boys). Most of the action takes place in Marinera, the land of eternal spring, located somewhere in the South Seas. The country is a major producer of diamonds; they provide much of the basis of conflict in the anime series. They come from one of the most prolific mines in the world, owned by the king of Marinera, the vertically challenged but horizontally endowed boy-king Patarillo himself. The International Diamond Syndicate - a huge semi- criminal organization/ secret society dedicated to taking over the world`s entire diamond supply- wants that mine and will stop at nothing to get it. In the early episodes they send off a number of bishounen assassins to do in Patarillo, which necessitates his having a bodyguard, the English MI6 agent, Major Jack (`Bishounen-Killer`) Bancoran. Bancoran`s nickname doesn`t mean he shoots bishounen in cold blood. The soubriquet comes from the fact that no male under the age of 17 can resist his sexual fascination. This, to Bancoran`s eternal disgust, includes Patarillo himself. The action switches often from Marinera to MI6 headquarters in London (London seems to be an easy two hour`s flight from the South Seas) or Bancoran`s palatial condo in the suburbs of same. (MI6, be it noted, looks a lot like Fritz Lang`s Metropolis, while Jack`s `apartment` bears a passing resemblance to Randolph Hearst`s spread.) The action also goes into the past and future and out into space. Patarillo evidently gets around. 
(Source: aestheticism.com)

He was a veteran seiyuu born in Chiba Prefecture.  He retired from voice acting on December 31st, 2000 when he felt a weakness in his own voice. Sogabe died on September 17th, 2006 at around 8 PM from esophageal cancer, with which he had been diagnosed two months before.

Once, there was an island where it was always spring... 
...An island somewhere in the South Seas, with green forests and wide lakes. And mountains, let us not forget the mountains. Tall mountains with deep roots, filled with one of mankind's most precious treasures: diamonds. The name of this island is Malynera, and its king is only a child. 
Patalliro the 8th, King of Malynera, is ten-years-old. From the day he was born, everyone knew he was... unusual. He is a hyper boy, with flashes of genius, moments of thoughtless cruelty, and the ability to make a bad pun out of anything. Smart, but only a child and so he often does very stupid things. 
Patalliro! is his story. 
He lives in a world very similar to our own, but where the bizarre is commonplace. He manages to get into all kinds of trouble, from international terrorists, to space aliens, to accidental time-travel. His first challenge as king is to stay alive, when a group called the International Diamond Syndicate decides that they want control of the Malynera diamond mines. This is how he meets Bancoran, who was assigned to be his bodyguard during a trip to Britain. It's also how they meet Maraich, who was one of the assassins sent by the IDS. 
Patalliro is almost always accompanied by his army of Tamanegi ("Onions", so-called because of their onion-shapped wigs). The Tamanegi all wear identical masks, wigs, and glasses, and are known only by numbers. They are Patalliro's protectors, but protect the world from him just as much as they protect him from the world. 
(Source: cathion.net)

Patarillo! is set in a society much like ours in most ways, with one decided twist. The manga on which it is based is one of the much-read works produced for adolescent Japanese girls that features a healthy proportion of gay men and beautiful teenagers aka bishounen (beautiful boys). Most of the action takes place in Marinera, the land of eternal spring, located somewhere in the South Seas. The country is a major producer of diamonds; they provide much of the basis of conflict in the anime series. They come from one of the most prolific mines in the world, owned by the king of Marinera, the vertically challenged but horizontally endowed boy-king Patarillo himself. The International Diamond Syndicate - a huge semi- criminal organization/ secret society dedicated to taking over the world's entire diamond supply- wants that mine and will stop at nothing to get it. In the early episodes they send off a number of bishounen assassins to do in Patarillo, which necessitates his having a bodyguard, the English MI6 agent, Major Jack ('Bishounen-Killer') Bancoran. Bancoran's nickname doesn't mean he shoots bishounen in cold blood. The soubriquet comes from the fact that no male under the age of 17 can resist his sexual fascination. This, to Bancoran's eternal disgust, includes Patarillo himself. The action switches often from Marinera to MI6 headquarters in London (London seems to be an easy two hour's flight from the South Seas) or Bancoran's palatial condo in the suburbs of same. (MI6, be it noted, looks a lot like Fritz Lang's Metropolis, while Jack's 'apartment' bears a passing resemblance to Randolph Hearst's spread.) The action also goes into the past and future and out into space. Patarillo evidently gets around.