The creator of both "Grey's Anatomy" and "Scandal" is Shonda Rhimes. She is an American television writer and producer known for creating popular TV series such as "Grey's Anatomy," which debuted in 2005, and "Scandal," which aired from 2012 to 2018. Rhimes is the founder of the production company Shondaland and has been recognized for her significant influence in television, including creating multiple successful dramas that have each reached over 100 episodes.