Alligator Nichol, the son of the Grim Reaper herself
Jackals is a Manganote Yes really, some mistake it as Manhwa due the artist being Korean, it is only partially drawn in Korea, but the final touches and publication are all in Japan written by Shinya Murata and drawn by Byun-Jin Kim. It chronicles the life of a mercenary named Nichol, son of another mercenary, in Friedrichs town of Cicero City, which also houses other mercenaries generally grouped under the titular Jackals and two major gangs, the Mafia-like Gabriella and the Triad-like Tennouren. The story kicks off when Nichol, after finishing one of his jobs, is assaulted by a Gabriella executive and kills him in retaliation, causing the rest of Gabriella to hunt him. However, they are impeded by the ever-growing Tennouren, who just loses their former leader who is swiftly replaced by his genius daughter.
Dying Moment of Awesome: Roxy is very badly injured in her fight with her son, enough so that he's convinced he killed her. She then marches up who knows how many flights of stairs just in time to do a Big Damn Heroes for Sheryl via decapitatingShao the Decapitator. She then proceeds to Human Shield Sheryl from Franco's machineguns long enough for Nichol and Huya to get the drop on Franco and his guards. BADASS, THY NAME IS ROXY.
Enemy Mine: Hans just hates the idea of teaming up with Nichol.
Fake Defector: Cornelio. He is always a Gabriellan, but when Tennouren takes over Gabriella thanks to Franco's betrayal, he pretends to side with Tennouren until he reveals to Arshela he's always been a Gabriellan, after goading her to kill him with Domino to atone for the 'betrayal'.
Feel No Pain: Domino once gets stabbed at her heart. She then proceeds to torture her assailant as if nothing happened. A few chapters after that, she also happily slices her own tongue in the midst of torturing her victim. Cornelio eventually finds out her trick, allowing Arshela to finish her off.
Knight Templar: One police officer is hellbent on upholding the law by punishing (read: executing) anyone who breaks them. For example, he kills both a mugger and his victim, the former because he tries to mug, the latter because she is in the street past the curfew.
Mama Bear: Roxy knows just how much Sheryl means to Nichol and so uses the last of her life to protect her when Franco and Shao try to use her as leverage against Nichol.
Left Hanging: There are many questions left unanswered at the end of the series.
Never a Self-Made Woman: So deliciously subverted it makes the series stand out for this. Not only has pure Badass Nichol been trained by his... MOTHER - you read that right - but also the Big Bad is... a WOMAN, and she is even better than her father in her evildoing. Although she ends up not being tha actual Big Bad, but nevertheless still a Magnificent Bitch.
Only in It for the Money: Well, the Jackals are mercenaries... Also, this is Don Salieri's thought on why Vampire Franco follows him. Unfortunately, Franco is greedier than that.
Pet the Dog: While Lee Mei Lang does escape with Sheryl for practical reasons, she also did it as a favor to Roxy (for Roxy's reasons, see Mama Bear) and because if Sheryl DID hang around while Nichol and Huya fought, she'd definitely get hurt somehow.
Red Baron: Each important executive of Gabriella and Tennouren has one/two word as their title, such as Cyclone Claude, Bear Shao etc. The best Jackals mercenaries also have one, such as Alligator Nichol and Shinigami Roxy.