|Romaji Name||Tasogare no Suzuka|
|Age||Unknown (Around 21)|
|Anime Debut||Episode 6|
|Japanese Voice Actor||Sayuri Yamauchi|
|English Voice Actor||Wendee Lee|
"Twilight" Suzuka (黄昏の鈴鹿, Tasogare no Suzuka?) is a female Ultra Class A assassin who only kills when the sun is setting. Her preferred weapon of choice is a bokken, or wooden sword, which through secret, semi-mystical swordplay can be used to slice metal like a cleaver (in her premiere episode, she sliced through a delivery truck that nearly ran her over), and smash concrete. On the next stroke, however, it will land only a knockout blow on her opponent. She uses a wooden sword instead of a metal one to prevent it from being identified by metal detectors as a weapon.
She first appears when she tries to kill Gene Starwind's friend Fred Luo as part of her contract with a rival weapons seller. Gene is able to outsmart her and force her to consent to come after him before she kills Fred as part of her pride. However, in her next appearance, Suzuka saves Melfina from a Kei Pirate and decides to help the group against the Kei Pirates, mainly to go after a member of the Anten Seven named Hitoriga, who killed her family. Surprisingly, Suzuka seems to know more about the Kei Pirates than the rest of the crew. Among the various members on Gene’s ship, Suzuka could best be considered the lone wolf, relying very little on outside help to accomplish her goals. To add to her already enigmatic demeanor, she frequently disappears at ports to take care of "business." She is quiet and pensive, and once tells Gene that she 'sticks around' only because she finds him interesting, much to his chagrin. Throughout the series, there are only three known battles that she has lost; once in the past to Hitoriga (who killed her family), once to Gene, and once to Shimi (possibly due to a meal Aisha had cooked than a lack of skill, though Shimi may have beaten her anyway).
Much about Suzuka's past is unknown, such as why the Kei pirates would target her family, how she survived, and who trained her. Even her age is never really mentioned during the run of the series, though she is estimated to be around Gene's age. All that is known is that her pursuit of the Kei Pirates is of personal nature, particularly towards the assassin Hitoriga. Near the ending of the series, it is implied that she has feelings for Gene. During her fight with Hitoriga, he says, "Well wonders never cease. I'm surprised that you would even consider a partner (referring to Gene Starwind). So Suzuka, are you in love with him?" She responded by telling him that he will hear her answer after she kills him, as a sort of gift in order to see him off to the after life. After the fight and Suzuka wins, she never tells Hitoriga her true feelings for Gene so the nature of her feelings for him have been left unresolved.
- Cartoon Network heavily edited references to Suzuka being an assassin on the first episode she appeared in (Episode 6) when this show aired on Toonami, though some references managed to slip by.