Stage Name: Krystal (크리스탈)
Real Name: Krystal Jung/Jung Soo Jung
Position: Lead Vocalist, Maknae
Birthday: October 24th, 1994
Blood Type: A
Birthplace: San Francisco
Nationality: Korean
Height: 165CM

Hobbies/Specialties: Acting, Dance
Casted: 2006 SM Casting System
Fun fact: Younger sister of SNSD's Jessica

~Works~
Shinwa's "Wedding March" MV
SHINee's "Juliette" MV
Rain's "Still Believe" MV
Alex's "Sweet Dreams" MV
Professor Yoon English Class CF
Yuhan Kimberly CF
SK, LG Telecom CF
OhDdooKi Curry CF
EO CF
Lotte Chilsung Cider CF
Sang "God of Study" OST (Spread it's Wings) with Amber and Luna
Sang "Invincible Lee Pyung Kang" OST (Hard But Easy) with Luna
Sang "Cinderella's Sister" OST (Calling Out) with Luna
Sang "Sign" OST (Because of Me)
2010 More Charming by the Day
2011 Grand Winner on Kim Yuna's "Kiss and Cry"
2011 High Kick Season 3

2002: Lotte Chaurin Green Tea
2003: Yuhan Kimberly
2003: Ohdduki Curry
2003: EO
2006: Korea Life
2006–2007: Yoon's English Academy
N/A: Bakhakchun Language BIBLE
N/A: SK LG Telecom
N/A: Lotte Chilsung Cider
2010-2011: Clean and Clear with Seohyun