Carol is referencing Beast Wars and not Mario Brothers. Bowser is the pet name Blackarachnia gave her knight in fuzzy armor, Silverbolt. FYI.
They’re talking about who should play who over on the facebook group. If you have any ideas feel free to head there and voice them. I will then show up at random and tell you why you are wrong. I think there’s a link at the top of the page, but here it is again anyway. https://www.facebook.com/?ref=logo#!/groups/263417838175/