"Host and creator of the video, also known as Ras Mic; developer of the Ralphy tool."

"Host of the video (Ras Mic), conducting the investigation and interview."

"Host and developer of the project, speaking throughout the video. Identified via the GitHub repository name in metadata."

"Host and developer of the tutorial, speaking directly to the audience and demonstrating the application."

"Host and developer presenting his Next.js codebase structure; identified as 'Michael' in transcript and 'Michael Shimeles' via metadata."