Gooigi

Gooigi is a clone of Luigi who first appears in the Nintendo 3DS remake of Luigi's Mansion and later appears in Luigi's Mansion 3. He is true form of It in SMG4: Mario vs IT🤡.

Appearances
Gooigi appears in Luigi's image, but is entirely composed of green goo, hence his name, and wields a gooey version of the Poltergust 3000 and Poltergust G-00. He also has a letter "G" on his hat instead of an "L".