2) Mii's are additional playable characters customized by the players themselves. This feature first appeared in Warioware Smooth Moves in 2006.
3) The word Mii is a portmanteau for the words "me" and "Wii." This feature was made to give players an avatar of their own design.
4) The first Mario game to feature Mii with voices is the Mario Kart Wii.
5) New Super Mario Bros. U is the fourth game in the New Super Mario Bros. series and the first Mario title for Nintendo Wii U.
6) The Koopa Clown Cars returned in New Super Mario Bros. U with several customized enhancements. The Koopa Clown Car is also called as Koopa Copter, Koopa Clown Copter or Flying Carriage in other Mario games.
7) Bowser Jr. has its own version of Koopa Clown Car. In some Mario games where he appeared, he named his own flying carriage as Junior Clown Car.
8) The Koopa Clown Car was introduced 1990 in the classic game Super Mario World for Super Nintendo Entertainment System (SNES). The King Koopa himself is the first known user of the flying carriage.
9) In the Japanese manga Super Mario-Kun, the Koopa Clown Car is called Pierocopter. Piero is a diminutive for the French word pierrot, which means "clown."
10) The Koopalings are back in New Super Mario Bros. U as bosses. Did you know that in earlier versions of Mario games, the Koopalings were originally considered as Bowser's offspring? This was later debunked especially after Bowser Jr. was introduced in the series.
11) Ludwig von Koopa is a musical maestro who loves to compose "Koopa Symphonies." His name is undoubtedly a reference to the famous 18th-19th century composer and pianist, Ludwig von Beethooven.
12) It is interesting to note that Ludwig von Koopa's hairstyle is directly copied after Ludwig von Beethoven's hair.
13) The aspiring musician Ludwig von Koopa is considered as the leader of their motley group of Koopalings.
