It makes sense since at the time they were trying to build support for the original X-Men cartoon concept (including using the Arcade Game) and she's one of the main villains. They're just trying to build name recognition.
__________________ Land of the free, home of the brave...
Do you think we will ever be saved?
In this land of dreams find myself sober...
Wonder when will it'll all be over...
Living in a void when the void grows colder...
Wonder when it'll all be over?
Will you be laughing when it's over?