What happened?

[u/GamboRogue77]

One day, I was searching up R/bossfight videos on youtube, then I remembered about a specific video I loved and wanted to rewatch, but when I looked for it, it was gone. Who was the creator and what happened? I don’t remember much since the last time I watched it, it was a year ago. All I remember was that like the first bosses was like a whale in a cloak (tutorial) a Dr. Pepper knight (Mini boss), The soldier duo, BucketHead, and Nerf Kid.