|Homeworld||The Kingdom Mushroom|
What Does He Do? 
He has the same abilities as Luigi, but is not Luigi due to varying stats such as weight, power, speed and such. And instead of his talent being sucking up ghosts, it's the opposite: spitting out ghosts.
How Is He Not Luigi? 
His name does NOT have Luigi in it and he is different from Luigi, duh.
Is He Mario? 
No, he is not Mario. Even though his name has Mario in it, he is not Mario since he shares no similarities to Mario besides part of his name.