Poison Ivy Week: Why was Poison Ivy left off of the "Batman & Robin" 4K cover?

Warner Bros. is releasing the 4K Ultra HD versions of the 1989-1997 Batman movies on June 4th. Each cover features Batman and the movies' villains. I thought that was a cool idea and each of the first three covers (Batman, Batman Returns and Batman Forever) look fantastic, however, that's not the case for Batman & Robin.

The cover for the fourth movie only features Batman and Mr. Freeze but not Poison Ivy. It makes no sense that Poison Ivy was purposely left off the cover when she was the second villain in the movie. It's not as if Poison Ivy is the reason that movie is generally panned by fans and critics, there were a lot of things that resulted in the demise of that film.

To me it seems intentional to not have included Ivy on the cover especially since Batman Returns features both Catwoman and Penguin as well as Batman Forever features Riddler and Two-Face. It's disappointing that Ivy was not included especially since these are really great covers.

Do you think Poison Ivy should have been left off of the Batman & Robin 4K Ultra HD cover?