Crayon Pop is a new five member girl group from Chrome Entertainment. They debuted with the song "Bing Bing" on June 24, 2012. They simultaneously released Korean and Japanese versions of the MV, which was filmed in Osaka. They have another MV titled "Saturday Night" coming out on July 18th and their 1st digital mini-album (with the two aforementioned tracks and their instrumentals, plus one remix) is dropping on the next day, 19th.
Also, two of the girls are actually twins, just to make learning who everyone is easier...

Profiles:Gummi

Name: Gummi (금미)
Real name: Baek Bo-ram
Birthdate: June 18, 1988 (age 24)
Height: 165cm
Ellin

Name: Ellin (엘린)
Real name: Kim Min-young
Birthdate: April 2, 1990 (age 22)
Height: 165cm
Choa

Name: Choa (초아)
Real name: Heo Min-jin
Birthdate: July 12, 1990 (age 22)
Height: 163cm
Note: Way's twin sister
Way

Name: Way (웨이)
Real name: Heo Min-seon
Birthdate: July 12, 1990 (age 22)
Height: 163cm
Note: Choa's twin sister
Soyul

Name: Soyul (소율)
Real name: Park Hye-kyeong
Birthdate: May 15, 1991 (age 21)
Height: 162cm
Videos:"Bing Bing" MV (Korean version - Check [noembed]
for the Japanese version[/noembed])
"Bing Bing" Dance practice
[Crayon Pop] 1st. mini album 'Saturday night' MV (teaser) #03Teasers for "Saturday Night". These are VERY similar to Girl's Day's "Oh! My God". An homage? A straight rip-off? Looks like fun in any case.

Here's a widdle shaky fancam of "Saturday Night". Another fun-looking dance. Dunno about the song, I'll wait for some proper audio.
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Wow, I only heard about these girls earlier today, when I saw the dance practice vid for "Bing Bing". And man, I watched it like seven times in a row. I'm a sucker for a good dance practice vid, I admit. I love the dance, the girls are cute... and the song is really, really good, maybe with the exception of the "Bing Bing" bits. But the instrumental, horn section and beat, love it. Also, Soyul is totally in the Q-ri zone of rap mastery. xD
Yeah, based on the debut, this is my fave rookie group of 2012 so far. Can't wait to see and hear more.