My Lucky Strike is not a typical romance webtoon. It is an insane rollercoaster of friendships, confusing emotions, secrets, and memorable scenes. But what truly makes this story shine is the My Lucky Strike characters, each bringing their own flavor to the plot. Whether you’re rooting for the lovable underdog Siru, swooning over Cheong’s subtle charm, or side-eyeing Gibaek’s red-flag energy, there’s no shortage of drama or depth. This character guide dissects the main and secondary characters of the series. Who are they? What motivates them, and why are they so important?
In other words, if you ever found yourself in the middle of an episode and thought to yourself, “Wait, who’s that again?” Or you just want to learn more about your faves, then this list will help you get up to speed with the characters of My Lucky Strike.
Gong Siru
(Queen of Awkward Crushes & Accidental Chaos)
Siru is a girl who wears her heart on her sleeve. She is awkward and stubborn, yet so sincere. Her dreams are as big as her budget, and she is trying to balance school, mixed-up feelings, and a crazy little brother. At the same time, also trying to avoid going insane. She may be too quick to blush and overanalyze every interaction, but she is adamant about seeking her way on her own terms. It can be her rebellion against unhealthy love, confrontation of unjust familial pressures, or her freak-out over the fact that she has no money in her bank account.
But Siru is a messy yet relatable person whose struggle is what makes her shine. She is not a perfect person, but she tries, and that is what makes her view of herself so adorable. Her silent strength, her self-deprecating moments, and her small triumphs make her the emotional pulse of My Lucky Strike.
Cheong
(The Chill Prince of Mystery Sunglasses)
Cheong is the mysterious sunglasses-wearing tough guy who is far more emotionally complicated than he would like to show. He cloaks himself in harsh words and a low-key demeanor, but what he does speaks louder than anything he says. Also, he is there when he needs to be to protect, console, or even just appear. He is emotionally baggage-ridden, in spite of being a wealthy man, with a distorted family structure and an overbearing sister. His developing relationship with Siru causes his carefully constructed defenses to fall.
And we get to see a surprisingly nice, thoughtful guy who is inarticulate but genuinely caring when it matters. Cheong is a quietly protective, dryly comic, emotionally complex character, and irresistibly compelling. He is, in a great many ways, the secret softie of My Lucky Strike—a bruised heart behind that cold surface.
Gibaek—Siru’s Ex-Crush
(Walking Red Flag in Designer Shoes)
Gibaek is the kind of guy who seems to have everything: popularity and charm. And he can even make a room light up. However, dig a little deeper, and you get a walking red flag in a nice outfit. He is a type of person who does not intend to hurt people, but he does it due to his emotional negligence. Gibaek never really got to know the feelings of Siru and never appreciated them in time. He is hot and cold and tells her that he wants her, and then treats her as an option. His adolescence is a cover for the real confusion about relationships and adulthood. Gibaek is not a bad guy; he is a boy who still has to grow up. An emotional bulldozer of unrealized potential, he is irritating and yet strangely familiar.
Jiho Go
(The TA Turned Lowkey Flirt)
Jiho is the surprise dark horse of My Lucky Strike. A clean-cut, polite TA with very serious green flag vibes and a mystery wallet of fortune. On the surface, he is that responsible, a little geeky person with good advice and a straight-laced aura. However, as we strip them off, Jiho is also clumsy, easily embarrassed, and totally funny when he attempts to digest Siru being nice to him so casually. Jiho is gold when he nervously overanalyzes a compliment or when he gets teased by his friends.
Jiho is intelligent, kind, and obviously hard-crushing, and yet never pushy. On the other hand, Jiho is likable because of the sincerity of his support for others, even when he himself is not confident. He is the safe space guy: sincere, honest, and unintentionally cute.
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Gukhwa
(Loyal Bro & Art Room Comic Relief)
Gukhwa is the messy best friend we all need; he is bold, emotional, and very loyal. (Though he is a total drama queen.) He will attack anybody who insults Siru, but he will also have a tantrum when you refuse to give him his tea. Initially, Gukhwa appears to be a comic relief, but behind the loud character hides a soft, insecure heart that is struggling to understand adulthood. Gukhwa is the source of color in the story, whether he is posing existential questions in the middle of a basketball game or making group projects go haywire by accident.
His dialogue with Cheong and his shielding aura around Siru leave an impression. He is a hot mess with a golden heart, and it serves as a reminder that growing up is odd and there is often no way out of it but to shout and roar through it first.
Jabin
(CEO of Chaos & Siru’s Bossy Big Sis)
Jabin is the older sister of Siru and a high achiever. The type of sister who makes you wonder why you made the life decisions that you did when she looks at you. Perfect grades, perfect outfits, perfect business pitches. Jabin has it all, and she is not scared to show it. However, behind her bossy, “I-know-best” attitude, there is a person who truly believes that she is doing the best thing for the family. She drives Siru to do her best not because she is mean, but because she is afraid that Siru will fail in a world where people get rewarded based more on their connections with others than their own abilities.
Although their relationship is stormy, Jabin has a complicated and realistic point of view. She is not an ordinary cold sister. She is a mirror of capitalism’s pressure and ambition. Jabin is the personification of the conflict between love and expectations in My Lucky Strike, and this fact contributes to the relevance of her arc.
Mijeol-Cheong’s Sister
(Queen of Manipulation with a Wine Habit)
Mijeol is the textbook example of a beautiful mess. Superficially, she is confident and glamorous and is always dressed to the nines. However, behind the fashionable handbags and cold gazes, there is a very insecure woman who feels like she has to hold on to the illusion of power. Particularly when it comes to her brother, Cheong. Aspirational and controlling, Mijeol walks the line between unhinged and human suffering. She was brought up to think that Cheong belonged to her to hold on to. And not an individual with his own destiny. Her complicated relationship with him—part guilt, part obsession—drives much of the emotional tension in the story.
Mijeol is not your usual villain; she is a tragedy in slow motion. Even when she does not deserve it, Mijeol wants attention and sympathy, whether she is causing drama at a party or fighting her own breakdowns.
Gyeongdan-Siru’s Younger Brother
(Tiny Agent of Mayhem with a Chaos Agenda)
The wild card of the series, Gyeongdan, is tiny in size yet massive in personality. He is inquisitive, witty, and capable of creating havoc, even when he really does not do anything much. Siru is always on her toes as he is either texting Cheong 300+ times a day or disappearing into a luxury hotel without anyone noticing. However, behind his hyper-bratty persona, there is a wounded child who needs attention and consistency. His light-hearted relationship with Cheong provides some of the purest moments in the text, and his casual remarks tend to go further than they seem to. Gyeongdan is a handful, but a scene-stealer, too, and a bit of a reminder that children, as well, bear the burden of broken families.
Rookie-Cheong’s Ex
(The Ex Who Can’t Exit Stage)
Rookie is that ex who simply will not go back to the background. Not because she’s wicked, but because she’s caught in a situation she can’t escape. In between the love and jealousy, she alternates between pouting and plotting. Rookie continues to desire Cheong, but deep inside, even she is aware that it is over. Her worst fault? Allowing Mijeol to play with her insecurities and become a pawn in the game of another person. But her tears seem genuine, lost, and not mean. She is not evil in nature. She is a person who learned not to give up. Her appearance makes the fragile relationship between Cheong and Siru more complicated and less confident.
At the same time, she makes us see how unpleasant relationships of the past can spill over into the present. Rookie is imperfect, emotional, and excruciatingly human, and this is to remind the audience that not all the antagonists are necessarily bad.
Bang-A
(Gossip Girl with a Grainy Camera and Zero Chill)
Bang-A is a simple social butterfly, gossip-seeker, and more interested in drama than in learning to actually empathize. She is the girl who records emotional meltdowns rather than offers assistance. She lives off the mayhem caused and lacks any form of self-insight. Her commentary on Siru and Cheong’s every move adds a layer of comic absurdity and social critique. However, even Bang-A is not evil; she is just shallow and superficial. She is also more of a walking tabloid than a real threat due to her hunger for gossip.
She is irritating, sure, but also a symptom of how harsh the school environment can be. Where you can become the popular and unpopular person in a group chat in a matter of seconds. She serves as a contrast to the more emotionally developed characters and serves as the chaotic echo chamber of the opinions of people in the webtoon.
Let’s be real—My Lucky Strike wouldn’t shine without its unforgettable characters. There are chaotic love triangles, unforeseen emotional connections, and so on. Every single character introduces a different taste of comedy, tragedy, and maturity, which is why this webtoon is a rollercoaster of recognizable situations and shocking twists.
