Black Lagoon is a two season action anime which tells the tale of Japanese businessman turned small time pirate 'Rock,' who throws in with the crew of the titular pirate ship after they are unable to ransom him back to his company after kidnapping him. Rock then joins crew mates Revy, Dutch, and Benny in their adventures through the underworld of fictional pirate port Roanapur.
- Action. From the very first episode, there's rarely a dull moment. Whether it's Revy shooting up a cantina, or Dutch working the Lagoon through some daring maneuvers, the pacing is superb, and drags you along from the very first episode until the last.
- Character Development. The relationships between the characters are very dynamic and realistic. When they're mad at each other, they stay that way until they make up. Or...sometimes, until they shoot each other. You never know, it's a show about pirates. Also, Revy's quasi healthy devotion to Rock is always evolving through the series, and shows itself in sometimes unexpected ways.
- Factions. There are no good guys and bad guys in Black Lagoon, only bad guys and worse guys. And some of the bad guys are truly bad. From the pirates themselves to the 'Hotel Russia' mafiya which sponsors them, the Triad, Mofia, and Columbian Cartels, a real who's who of criminal organizations are trying to make their play on the streets of Roanapur, and the Lagoon Company often finds itself right in the middle of turf wars and power plays.
- Flashbacks. Black Lagoon does have a decent number of flashback sequences, and while they typically do a good job of preventing them from becoming confusing, sometimes they fail, and the viewer simply has no idea what's going on.
- The bad and the bad. Some episodes, such as those in the Hansel and Gretel arc, are dark enough to be truly disturbing. while not unrealistic, per-se, they can be unexpectedly grim, even when set in the already hardboiled backdrop of the anime.
In the end, Black Lagoon is a superb anime. A must see for action fans, though care must be given to overlook some of its burrs and rough spots.