What is Lord Fei?

Some nouns in ACFUN that often appear in videos are used by adults to vomit. At present, Lord Fei has formed his own party, but no one knows who Lord Fei really is. At present, someone has played an unknown and difficult-to-interpret slogan, "Kill the Australian kangaroo with a car and step on the jellyfish barefoot", which is puzzling for a while, so the character Fei Daren is gone.