Nicki Ray

Nicki Ray is the host of a show-within-a-show game show called Celebrity Super Stumpers, which is shown in a The Magic School Bus Rides Again episode, "The Land Before Tim."

In When the Cold Breeze Blows Away, she is the leader of a supranational terrorist group called Blood Doom, and is responsible for the creation of Hogl Loud. Also, she is the Supreme Chairperson of the Global Liberation Front after Yuri's death.

She died on suicide bombing while fighting against US soldiers during the Battle of Tal Afar while hiding in a secret terrorist fortress after failing to kill Team Magic School Bus with a deadly game show-styled death trap, and is succeded by one of her subordinates, Irene Engel.

Revelation as Terrorist Leader
"Seesh. This gal has been a terrorist lapdog since this terrible war started."

--Jaune Arc to Ms. Frizzle, The Super Stumping Truth

Trivia

 * Her role as a villain is a reference to a Newgrounds game made by Midget1, World War III, where Bob Barker is one of the two main antagonists of that game if you choose the plane to be deployed to a terrorist fortress while he is attempting to destroy the Pentagon.
 * For more information, play on this game by clicking on the link here.