Social media influencer Brian Johnson, better known to millions of followers as "Liver King," was arrested Tuesday evening at Austin's Four Seasons Hotel after making threats against podcast host Joe Rogan on social media.

Liver King” was arrested in Austin, Texas after police say he posted threatening messages on social media directed at podcast host Joe Rogan.

Joe Rogan talked with cops after Liver King challenged him to a fight via social media ... and Joe told police the fitness influencer appeared to be "significantly unstable."