I’m not going to argue that Highlander is a cinematic masterpiece. The critical response was mixed to harsh, and the film wasn’t a box office success either, grossing just $13 million against its $19 million production budget.
I never knew it was box office failure when it was released.
When the author listed the adjacent media, she forgot to include Highlander: The Search for Vengeance; the 2007 anime based on the Highlander.
While I have pretty solid exposure to anime, I actually don't like the vast majority of anime. This is one of those anime experience that I would argue has crossover appeal. The art style isn't annoying, the characters and writing are relatively well done. It's actually a solid entry in the Highlander franchise.