Brian David Gilbert is an American YouTuber and actor. He released the album Songs With Videos Without Videos and the extended play Aaah!Bba, and collaborated with Tom Cardy on the song Beautiful Mind. Gilbert's notable songs include siblings and I Wish That I Could Wear Hats. He hosted the web series Unraveled at Polygon from 2017 to 2020 during which time he also worked as a video producer. Gilbert served as the fact checker on Dropout's Um, Actually from season 9. Post-Polygon, Gilbert has created comedy and horror YouTube videos, taken on voice roles in animated shows and video games, and worked as a writer.