Of course, every member plays a pivotal role in their group. However, beyond the leader, there's often that one standout member whose absence would leave a void, making the ensemble feel incomplete – akin to a recipe missing the key ingredient.

Here's a list of members who, according to fans, are indispensable to their respective groups!

ITZY - Ryujin

Like she said, it's "ITZY from Ryujin Shin," and that's why, ITZY won't be ITZY-ing without her. Her coolness and vibe, she's certainly the group's center for a reason. 

Red Velvet - Wendy

Red Velvet without Wendy feels like it's missing the flour part of this cake ingredient. Holding heavy on the group's vocals, Wendy is such an irreplaceable vocalist. 

ATEEZ - Jongho

He is another strong vocalist. Without Jongho's powerful vocals and the way he just pulls off the challenging notes in their songs, it certainly won't sound like ATEEZ without him. 

MONSTA X - Joohoney

Known for his powerful rap, he is definitely the sound of the group. Without Joohoney's rap and the amazing high tension he keeps, it would certainly be a lot quieter. 

NMIXX - Lily

Lily is just so essential to the group's sound, voice color, and vibe. NMIXX without Lily would not be the same at all.

LE SSERAFIM - Yunjin

With talent like her of having such a strong vocal talent, being able to write, and having another language besides Korean, you're certainly an indispensable member!

SEVENTEEN - Woozi

The entire Seventeen career and discography rely on this genius right here. Just the idea of thinking of a Seventeen without Woozi is a nightmare. 

NCT - Mark

Having Mark Lee in your group is certainly one special ingredient to have, and SM Entertainment knows that fact - which is why they added him into many different groups!

Stray Kids - Felix

All eight members are the sounds of SKZ, but not having their deep-voiced Felix would certainly be missing a significant ingredient -- that even non-fans would be able to catch on and question his absence. 

TXT - Yeonjun

Not only TXT, but how will K-Pop function without their 4th-Gen IT boy carrying the industry on his back with his killer dance skills, gaze, and sexiness?