Anyone remember the Dark Queen? From Battletoads?
When the Battletoads game came out in the early '90s, it seemed for a moment that they might be the next big thing.... like the Ninja Turtles, only... toads.
Unfortunately, the game, which seemed awesome at first, proved to be monstrously hard and almost impossible to beat.
And they never did get an afternoon cartoon, did they?
And instead of a proper sequel to the game, they did some sort of weird crossover with the Double Dragon franchise, and then vanished from the Nerdtinuum.
Shame, because the Dark Queen was cool.
Way cooler than Shredder, if you ask me.
[ EDIT: That crappy background had to go. ]