Steve Mollmann wrote:
For a story that has mass appeal, The Death of Superman has tons of goofy, unexplained things from the 1990s continuity: Matrix Supergirl, the War Worlders, Jimmy Olsen dressed as a Turtle, Bloodwynd, Redhead Australian Luthor. I can't imagine what Theoretical Casual Buyer thought of it.
You left out Bibbo.
And Trekker4747, who described the Matrix Supergirl as "some nubile teenage girl," is a little off. At that point in time, she was in appearance in her early 20s. It wasn't until she merged with Linda Danvers that Matrix became a teenager in body.