1-Up Studio Inc., formerly known as Brownie Brown Inc., is a Japanese video game developer. Having assisted with the creation of games such as Mother 3, The Legend of Zelda: Tri Force Heroes, the Super Mario 3D games and their spin-off, Captain Toad: Treasure Tracker, as well as creating new IPs including Magical Vacation and A Kappa's Trail, the company became a subsidiary of Nintendo. Following that, on February 1st, 2013, they announced they would be changing the internal structure of the company, including renaming themselves to their present name: 1-Up Studio Inc.
Lucas was originally going to replace Ness as the representative of the Mother series. However, possibly due to time restraints and/or Mother 3's numerous delays, this never went into effect and the game released without any Mother 3 representation.
Lucas is a semi-clone of Ness in Super Smash Bros. Brawl, representing the Mother 3 game. New Pork City, a location from Mother 3, appears as a stage, with the Ultimate Chimera randomly appearing to roam around within it. The Porky Statue, Lucas himself, and Lucas's Final Smash, PK Starstorm, appear as trophies. Porky's Theme, Unfounded Revenge / Smashing Song of Praise, Mother 3 Love Theme, and You Call This a Utopia?! appear as music tracks. Finally, Lucas, Claus, Kumatora, Duster, Boney, Salsa, Hinawa, Flint, Pig Mask, and Mr. Saturn in its Mother 3 design appear as stickers.
Mokka, as well as the species Putty and Pyrite, from the Magical Vacation series all appear as trophies. Mokka and Putty also appear as stickers, in addition to the male and female protagonists and Kirsh from Magical Vacation, the male protagonist, an HP Pot, and a Sparrow from Magical Starsign.
Lucas does not return in the base roster, instead being DLC, along with the trophy of himself, an alternate trophy, and the trophy of his Final Smash. While New Pork City does not return, the Porky Statue and Ultimate Chimera make appearances as trophies. Every Mother 3 music piece besides You Call This a Utopia?! returns.
3D Land appears as a stage to represent Super Mario 3D Land. The Boomerang from Super Mario 3D Land appears as both an item and a trophy. Other trophies from that game include Tanooki Mario & Kitsune Luigi, Boomerang Mario, and Mario (With Propeller Box). Super Mario 3D Land Theme / Beach Theme appears to represent Super Mario 3D Land, while Super Bell Hill, The Great Tower Showdown 2, and Champion Road appear as music tracks to represent Super Mario 3D World.
Lucas returns as a member of the base roster, along with New Pork City. Every Mother 3 music track from Brawl returns. Flint, Hinawa, Boney, Duster, Kumatora, Salsa, Ultimate Chimera, Absolutely Safe Capsule, Masked Man, and Claus appear as spirits.
New Donk City appears as a stage, with Mario gaining a new taunt, a new costume, and a slightly changed up special to reference Super Mario Odyssey. Bowser (Wedding), Peach (Wedding), Cappy, and The Odyssey appear as spirits. The Boomerang item returns, along with the 3D Land stage. Cat Princess Peach, Sprixie Princesses, and Plessie appear as spirits. Along with Super Mario 3D Land and Super Mario 3D World tracks returning from the previous game, Fossil Falls, New Donk City, Jump Up, Super Star!, Steam Gardens, Underground Moon Caverns, Break Free (Lead the Way), Plucky Pass Beginnings, and The King of Pyropuff Peak debut in this installment.
Totem Link and Madame Couture from The Legend of Zelda: Tri Force Heroes appear as spirits. Main Theme - The Legend of Zelda: Tri Force Heroes and Woodlands - The Legend of Zelda: Tri Force Heroes appear as music tracks, as well.
The male & female protagonists of Magical Vacation (both share a spirit), Mokka, and a Putty from the Magical Vacation series all return as spirits.