From the Super Mario Wiki
Corneria is one of the smaller stages in Super Smash Bros. Melee. The battlefield is actually Fox McCloud's flagship, the Great Fox, in flight over a large city on Corneria, which is a planet in the Lylat System; all of this is from the Star Fox series.
The Great Fox's front two laser cannons open fire often, and if any player is caught in its path of destruction, he or she can be KO'd. It is possible to destroy these cannons by attacking them repeatedly. Also, Star Fox's team will occasionally show-up in Arwing Fighters and open fire on anyone. Sometimes, Fox's rival Wolf O'Donnell and his team show up and shoot the stage as well. However, only one Arwing or Wolfen will be on the screen at any given time.
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