Nice looking girls, but from what I’ve learned about K-pop, without the backing of a big money agency, it’s extremely difficult to make it big over there because unless you have powerful backers, no one wants to give you exposure.
The girls of Crayon Pop are perfect examples. They’re represented by a start up agency and couldn’t get booked on any of the TV music shows, so they took to the streets and performed impromptu “guerilla concerts” until they developed a large enough fan base that the TV shows could no longer ignore them. Even with that, they seem to have been relegated to a “quirky” niche. They don’t exude sexiness like so many of the other popular girl groups, but they have an extremely loyal, if not huge following.
This is just a dance practice video but it’s my favorite song by them, and I think a testament to how good they really are.
https://www.youtube.com/watch?v=a43_L_Pchc8&list=LLhO5lNQzGvja-olo9AJaPUQ&index=3
And here’s the official release version of the same song.
https://www.youtube.com/watch?v=CaTcPBuqspE
I don’t know anything about Bebop other than watching a few of their videos from the link you provided, but it looks like they’re following the same path by performing at malls, etc. They definitely have the looks to use the “sex sells” angle if they wish, and very few K-pop artists actually play their instruments, so they have that going for them as well.