Gaur Plain

 is a location in Xenoblade Chronicles in the lower area of that appears as a stage in both Super Smash Bros. for Nintendo 3DS, Super Smash Bros. for Wii U, and Super Smash Bros. Ultimate.

The stage takes place on two of the high ledges overlooking the Bionis' Leg, and consists of two main upper platforms with several smaller platforms floating underneath, over a body of water underneath the bottom boundary of the stage. can be seen in the background. More platforms are included on the Wii U version, including two solid platforms that feature springs, which can take the player to the top of the stage. As time passes, the stage will change from day to night and back to day, like in the game of origin.

On the Wii U version of the stage,, a Faced Mechon and recurring major antagonist in Xenoblade Chronicles, may appear as a stage boss during the nighttime. He attacks players by swiping his claws and firing lasers that can destroy the platforms, causing the top platform to lower, though it is restored during the daytime. When leaving, he may also attack by flying across the stage. It is possible to defeat him by attacking him enough, which destroys him and damages any opponents nearby as he explodes. If Shulk is among the fighters, Metal Face utters special quotes directed towards him.

The Final Destination version of the stage is set on a flat, elevated platform.

Normal

 * "What do you lot think you're doing then?"
 * "Hope I'm not interrupting!"
 * "Nice night for a stroll, don't ya think?"
 * "I love the feeling of the wind in my claws!"
 * "There we go!"
 * "See how you like this!"
 * "Out of my way!"
 * "Oi, make way, come on!"
 * "You're a funny-looking lot, ain't ya?"
 * "This better be a good show!"
 * "Whatever you're doing, it looks smashing! Hahaha!"
 * "Didn't expect all this racket out here!"
 * "If it's one thing I'd like to see, it's carnage!"
 * "Carry on, you lot! Don't mind me! Hahaha!"
 * "I think I've got the best seat in the house! Hahaha!"
 * "Maybe I'll watch, and give you a few pointers!"
 * "Come on, fight harder, you little maggots!"
 * "Come near my claws, and you might get a nasty surprise!"
 * "Let's get things started!"
 * "Don't mind if I join in, do ya?"
 * "Watch and learn, maggots!"
 * "Time to cut you down to size!"
 * "DIE!!"
 * "Hey, hey! Time to die!"
 * "I'll slice you into pieces!"
 * "Let me hear you scream!"
 * "Ahahahahahaha!"
 * "Ugh! You'll pay for that!"
 * "Think that's clever, do you?"
 * "You're getting on my bad side!"
 * "Hey, that's not fair!"
 * "Why, you little...!"
 * "Ugh! Get off me!"
 * "This isn't over!"
 * "All that work for nothing!"
 * "This ain't how it's meant to go!"
 * "Huh, look at the time. See ya, kiddies!"
 * "It's been good laugh, but I'm off!"
 * "That's it for now. See ya, kiddies!"
 * "Time for a little parting gift!"
 * ''"I'm off. See ya, kiddies! But first..."
 * "If you've got any final words, now's the time!"

Special quotes (if Shulk is in the battle)

 * "If it isn't the puny boy himself! You miss me?"
 * ''"Hey, Monado boy, hope you don't think you can hurt me with that thing!"
 * "Oh, looks like Monado boy's been practicing!"
 * "If the brat's here, I bet Dunban can't be far behind!"