Thunder ( MBLAQ )

• Full Name: Park Sanghyun (박상현)
• Date of Birth: October 7, 1990 (1990-10-07) 
• Position: Rapper, Lead Dancer, Vocalist

Cheon Doong (Korean term for Thunder) is the younger brother of 2NE1 vocalist Sandara Park. Having trained under Loen Entertainment, Cheon Doong transferred to J.Tune to then replace member Sang Bae (상배) after he left before the group's debut. His sister, Sandara Park, is a former Korean expatriate who once starred in movies and television shows in the Philippines. Like his sister, he lived in the Philippines and is fluent in Tagalog and is also conversational in English. He rap for Lyn song "New Celebration" together with Dok2