Shenhua is a Taiwanese assassin in the employ of Mr. Chang. She prefers to use various edged weapons in close combat, in particular a pair of kukri knives linked together with a length of leather rope at the handles. She is also skilled in the use of throwing knives. Shenhua is a professional rival of Revy, whom she has worked with and against at times. Her personal religion is Taoism. One of her most notable traits is her broken speech pattern, which is always moving between Chinese and English. This can be compared to Shampoo from Ranma 1/2.    It is unknown if Shenhua has any unarmed hand-to-hand skills, although it seems likely. In the anime she fights only with blades, and never engages anyone in true hand-to-hand combat.

Okajima Rokuro is a Japanese businessman in a town full of Japanese businessmen. His normal day consists of social drinking with clients and being kicked around by his bosses. He finally gets a break though, as he's sent by his company to the tropical seas of Eastern China to deliver a disc. But his boat gets hijacked by a band of mercenaries hired to retrieve the disc. Rock (as he is newly dubbed by his captors) catches the interest of the only female merc Revy as she thinks he's worth a ransom, taking him hostage. However, the disc that was stolen has a terrible secret that's unknown to Rock, which causes massive confusion and chaos for both him and his kidnappers.

She played J.J in _Friday the 13th Part VIII_.

Okajima Rokuro - now known almost exclusively as 'Rock' - was once a typical, put-upon Japanese businessman. Then, on a routine business trip, he was kidnapped and ransomed by the Lagoon Company: a band of mercenary pirates operating out of the crime-riddled city of Roanapur. Abandoned by his bosses, he joined the Lagoon Company. Now he must try and stay afloat amongst the ever-shifting politics of the criminal underworld, while simultaneously avoiding death at the hands of his quick-tempered, gun-toting co-worker, 'Two Hand' Revy.
 
(Source: Anime News Network)

Roberta, the terrorist-turned-maid that made her appearence in the first season of 'Black Lagoon', returns in this five-episode OVA series - and this time, all bets are off! 
Roberta's benefactor, the patriarch of the Lovelace clan, is murdered during a political rally. The assassin's trail soon leads back to Roanapur - so now she has returned on a mission of vengeance! However, close behind her is the new patriarch, Garcia, as well as Roberta's apprentice (and maid), Fabiola Iglesias. As the body count of Roberta's bloody rampage mounts, forces from within the corrupt island (which includes the Lagoon Company), as well as overseas converge on what threatens to escalate into all-out war!

Rokurō Okajima is just an average Japanese salaryman, living an average life. But when he's taken hostage by the crew of the Black Lagoon, Rokurō finds himself thrown headfirst into a deadly world of outlawed heroes, brutal villains, and blazing gunfights. Where he ends up is anyone's guess, but one thing is for certain—he's in for a wild ride!
 
(Source: Viz Media)

Tankathlon is a new form of tank sport gaining slowly gaining popularity among Senshado enthusiasts. While also involving tank battles, Tankathlon is distinguished by its lack of official oversight allowing any school with tanks to participate in a battle anywhere at any time, and a 10-ton weight restriction on tanks used, limiting battles to light tanks and tankettes.

Special omake episodes from the Blu-Ray releases, showing the heroines and foes in funny, uncommon situations.

Rock (Okajima Rokuro) was just a normal Japanese businessman, but through a series of unlikely events, he found himself part of the "Lagoon Company," a group of transporters who do a little pirating on the side. Together with Dutch, Revy, and Benny, he sails the seas of Asia aboard the modified torpedo boat "Black Lagoon." 
Their base, the lawless city of Roanapur, is just barely balanced on the brink of outright war, controlled and occupied by criminal organizations from across the globe. Standing above the rest are Balalaika of Russia and Chang of Hong Kong. 
Our story finds Roanapur just a little while before Rock, with Revy in tow, is due to head back to his old home of Japan. 
It is a tale about soldiers who once fought united under a cause in a land of sandy winds, the strictly personal reunion of a captain and her one-time subordinate...