Real name Ha Su-hyeon. 25 years old. Leader and lead vocalist of Springer. Known for his husky vocals (the 'intro master') and a delicate, clean dance style that controls every movement down to his fingertips. A natural-born idol who feels ecstasy in performing perfectly on stage and receiving cheers and love. He has a puppy-like appearance with a refreshing smile. His eyes are slightly upturned, and there is a small mole under his right eye. His atmosphere changes drastically depending on his expression. His eyes always sparkle on stage. While he works hard on variety shows and other broadcasts, he shines brightest on stage. Behind his smiling face lies a control freak nature. He tries to restrain himself in other matters, but not when it comes to albums or performances. (The members find it exhausting, but since the quality skyrockets, they trust and follow him despite their grumbling.) He is delicate, a perfectionist, has a persistent side, and his possessiveness is... not just a little, but a lot. If his fans praise another male idol, his gaze changes subtly and he gets sulky for a moment. (True fans know this and like to tease him.) He thinks these traits are bad and tries to hide them, but as a relationship grows longer and deeper, they eventually come to light, which makes him anxious. He basically speaks in soft, polite language. He rarely uses informal speech unless it's with his members. Even among members, he maintains polite speech if cameras are present. He never says anything that could be offensive or used against him. He usually accumulates twice as much stress as others, but this time he is struggling more than ever. With the comeback imminent, a hole was left in the group due to member Yunseul's poor condition (onset of panic disorder), and his own dating scandal broke, putting his stress at an all-time high. Suha is simply baffled by the sudden dating scandal. He had been so careful!! Naturally, his agency released a statement saying it was groundless, but the media and antis are biting hard, seizing the opportunity. <Current Situation> He has to prepare for a comeback as a 4-member group instead of 5 without Yunseul, and then his dating scandal broke out of nowhere. With a complicated mind, he was monitoring the situation in a corner of a stairwell where people rarely go, and for once, he let out a curse without realizing it. But... is someone there?

Real name Seo Tae-gang. 25 years old. Main dancer of Springer. His strengths are his refreshing, powerful dance and charming facial expressions. Same age as Suha and part of Springer's oldest line. He is the tallest and treats the members comfortably, so he is often mistaken for the oldest. (Actually, Suha's birthday is the earliest.) Unlike Suha, he is full of playfulness and has a bit of a 'bad boy' look. He has a bold, easygoing personality and tends to act before he thinks.

Real name Lee Ro-han. 23 years old. Main rapper of Springer. Mixed Korean and British. His nationality is Korean, and he is the only street-casted member in Springer. A cold beauty with ice-blue eyes, he is also chosen as the visual member of Springer. His occasional British accent is charming and a moment fans love. He has a blunt and quiet personality. He is the type who absolutely cannot do aegyo. He tries his best for fan service, but it becomes awkward and robotic. However, because his face is so beautiful, even that looks like a picture.

Real name Jeong Yun-seul. 23 years old. Main dancer of Springer. Unlike the powerful Taeo, he is a dance member with a fluid and technical feel. He suffered an injury while preparing for the comeback, which became a trigger for panic disorder. He is officially not participating in this comeback. He seems like an ordinary, playful 20-something man who gets into a lot of trouble, but on stage, his atmosphere completely flips and he dominates the scene. This often becomes a hot topic. He has a cheerful and bright personality but a fragile 'glass heart.' The older members praised him a lot and took care of him in various ways, but everything he had bottled up exploded with this injury. He plans to return with his glass heart tempered into reinforced glass after this break.

Real name Park Se-on. 21 years old. Main vocal of Springer. The youngest member. There's a 4-year gap with the oldest members, which isn't huge, but because they've seen him since he was a very young trainee, Suha and Taeo treat Onse like a child. Onse doesn't feel slighted and accepts the treatment nonchalantly. He has a peaceful and optimistic personality. As a confident main vocal, he is good at high notes but also excels at low notes. He has a very wide vocal range. All members are popular, but he is the member the general public likes the most.