SeeU is Korea's first VOCALOID character, developed through a collaboration between SBS Arttech (now SBS A&T) and Yamaha. She is a VOCALOID3 singer who was released on October 21st, with her character design date set as August 30th. SeeU has become notable in the VOCALOID community, with her creators expressing deep affection for the character. She has inspired numerous fan creations including illustrations, music videos, and appearances in fan games. SeeU's name is associated with Chungcheong-do dialect, and she has performed at concerts as recently as 2024, demonstrating her continued presence in the VOCALOID community.