Trivia: Black Lagoon
- Actor Allusion: In the English dub of Roberta's Blood Trail, Roberta yells "Shut up! Shut up! Shut up!" at the hallucination of the Japanese worker whom she killed years ago. Her voice actress also voiced another character who regularly says that quote.
- Artistic License – Geography: The series explicitly states that Roanapur is in Thailand. But… every car shown in the series has the steering wheel on the left side and traffic in and around the city drives on the right (like in the USA and China). In reality, Thailand's road rule is the opposite – traffic there drives on the left and most cars have their steering wheels on the right (like in the UK and Japan). It would make a lot more sense if Roanapur was in neighbouring Cambodia. This is an unusual bit of Critical Research Failure on Rei Hiroe's part (considering how much really obscure stuff he gets correct).
- Fan Nickname: For Roberta, we have "the Maidinator".
- Hey, It's That Voice!:
- No Export for You: The light novels, which can only be ordered from Japan, in Japanese. Some bloggers have published translations, though.
- Playing Against Type:
- What Could Have Been: At least one piece of old artwork shows Rock with a gun, as seen here.