First impressions| Random things you know about idols-groups you don't stan

As the title says, what are some things you know about idols you don't stan? A random first impression, something you learned about them on social media or a show (maybe even through an interaction with your faves) that seems like "inside info/joke" or a "fun fact" and remains in your memory connected to said person/group.

Some examples in my case would be about Girl's Generation:

• Yoona: played Go Anna in K2.

• Seohyun: saw her on We Got Married, seems to be a diligent and organized person. Very focused on self improvement. Think I saw her in some dramas too.

Don't know if the things about Seohyun are accurate or were part of a script. I don't follow SNSD (just a casual listener) so those were the first things I got to learn about her, but then again it's been years since that show came out so she could have changed.

Btw, Please be respectful, don't mention any negative or insensitive stuff (like scandals).