Fans are eager to know more about their favorite K-pop idol Cha Eun-woo as he remains a hot topic nowadays. As the ASTRO members graced the recent episode of "TMI News," they revealed the "True Beauty" star's side that not everyone often gets to see.

After a video of Cha Eun-woo speaking in two different voices emerged, the ASTRO boys revealed how he looked when he was angry. Compared to fans, JinJin, MJ, Moonbin, Rocky and Sanha probably knew how the fan-favorite K-pop star's appearance when he was mad and he still looked perfect.

AllKpop noted the 24-year-old star would first clench his teeth and then tucked his chin. His gaze would be 45 degrees looking at the ground and he would be more articulate with his sentences, speaking more clearly.

A netizen seconded the group's revelation, shared the same info in an online community and posted some clips of Cha Eun-woo when he was mad. The fan even exampled when he joined a basketball game on a TV Show and showed his competitiveness.

Despite his angry look, fans could not help but fall for the "My ID is Gangnam Beauty" star's perfect visuals. One fan said he was always smiling, which made him more handsome, covering his angry face.

They even noticed he still looked good when he had a straight face and even when he was annoyed. "He should get mad more often," one fan suggested, while another said it should be "every day."

Others said he looked like a sculpture and even more good-looking. All in all, fans could still appreciate his look even when he is not in the good mood.

Meanwhile, aside from his angry looks, fans also praised Cha Eun-woo's two different voice pitches, per Sportskeeda. His followers started to swoon over his deep tone but later accused his agency, Fantagio Music, of controlling his pitch when doing commercials.

The music company, allegedly, required the singer to use his idol voice when shooting broadcast ads. He, reportedly, had to speak on a high pitch, which he might have been practicing since he was a teenager.

This move angered many fans, knowing idols' lives were very much controlled by their agencies. They saw it as mistreatment as the K-pop singers could not use their real voices, even just for shooting ads. Anyhow, they also could not help but wonder why it was important for Cha Eun-woo to use his idol voice instead than his regular voice when doing ads.