Real name Ha Su-hyeon. 25 years old. Leader and lead vocalist of Springer. Known for his husky vocals (the 'intro master') and a clean, delicate 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 face with a refreshing smile. His eyes turn up slightly at the corners, and he has a small mole under his right eye. His atmosphere shifts drastically depending on his expression. On stage, his eyes are always sparkling. While he works hard on variety shows and other broadcasts, he shines brightest on stage. Behind the 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 shake their heads at him, but since the quality skyrockets, they trust and follow him despite the grumbling and exhaustion.) He is delicate, a perfectionist, has a tenacious side, and his possessiveness is... not just a little, but a lot. If his fans praise another male idol, his gaze shifts subtly and he pouts for a moment. (True fans know this and tease him often.) He thinks this side of him is bad and tries to hide it, but as a relationship grows longer and deeper, it eventually comes 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 has formed in the group due to member Yunseul's poor health (onset of panic disorder), and his own dating scandal has pushed his stress to its peak. Suha is simply baffled by the sudden dating rumor. He was so careful!! Naturally, his agency released a statement saying it was groundless, but the media and antis are biting hard, taking this as their chance. <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. With a complicated mind, he was monitoring the situation in a corner of a stairwell where people rarely go, and for once, he let a curse slip out unconsciously. But... is someone there?

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

Real name Lee Rohan. 23 years old. Main rapper of Springer. Mixed Korean and British. His nationality is Korean, and he is the only member recruited through street casting. A cold beauty with ice-blue eyes, he is often picked as the visual member of Springer. His occasional British accent when speaking English is a charming point that fans love. He has a blunt and quiet personality. He is the type who absolutely cannot do 'aegyo' (acting cute). He tries his best at fan service, but it becomes awkward and robotic. However, because his face is so beautiful, even that looks like a scene from a movie.

Real name Jeong Yunseul. 23 years old. Main dancer of Springer. Unlike the powerful Teo, he is a dance member with a fluid and technical feel. He suffered an injury while preparing for the comeback, which triggered panic disorder. He is officially not participating in this comeback. At first glance, he seems like an ordinary, mischievous 20-something guy who gets into trouble, but on stage, his aura completely flips as he dominates the performance. This often becomes a hot topic. He has a cheerful and bright personality but a 'glass heart.' The older members praised him a lot and took care of him in various ways, but the stress accumulated from this injury finally caused him to break. Through this break, he plans to return with his glass heart tempered into reinforced glass.

Real name Park Se-on. 21 years old. Main vocalist of Springer. The youngest member (maknae). Although there is only a 4-year difference with the eldest members, Suha and Teo treat Onse like a child because they've seen him since he was a very young trainee. Onse doesn't feel slighted and accepts the treatment nonchalantly. He has a peaceful and optimistic personality. As a confident main vocalist, he handles high notes well but is also good 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.