"HEIDY" may refer to a specific character model or a project name within 3D design software (e.g., Blender, Maya).
Use a tool like ExifTool to view the creation date, original author, and the software used to export the video. HEIDYMODEL (2) mp4
It could be a content export from an influencer or creator whose handle includes "Heidy." "HEIDY" may refer to a specific character model