Soundfrog

The Soundfrog is a character featured in Super Mario Maker. Its appearance is a green, cartoonish frog, similar to the one found in the Mario Paint composer. By tapping the Soundfrog icon on the left-hand side of the editing screen, the player can access a variety of sound effects to use in their course. Soundfrog is eventually unlocked in the game alongside the sixth shipment of editing tools.

The sound effects can be placed onto the backdrop and will play if Mario touches them, but they can also be placed onto objects and enemies and will play the noise if the object does a specific thing (for example, hitting a ? Block from below). Most sound effects create visuals and will appear as the sound itself plays. Additionally, there is a sample course in the game called "Sound Effects" that shows the player how sound effects work and what they can do.

The Soundfrog itself is also one of the creators of the "Official" courses in the game. Its first course, Muncher Mayhem, was released a day after the game's version 1.20 update.

Super Mario Maker 2
Sound effects return in Super Mario Maker 2 with new additions. All of them are now categorized in at least five groups.

Returning

 * SMM SFX 2.png ( red  group)
 * SMM SFX 4.png ( yellow  group)
 * SMM SFX 4 Alt.png ( yellow  group)
 * SMM SFX 5.png ( green  group)
 * SMM SFX 6 Alt.png ( purple  group)
 * SMM SFX 9 Alt.png ( red  group)

New

 * A sinister flash, after which the screen becomes dull while a terror tune replaces the level music (group unknown)
 * A manga-style visual composed of white flares linked by electric discharges (group unknown)
 * An effect based on The Mysterious Murasame Castle in which Takamaru's and enemy ninjas' sprites from said game move through the screen while music from the game replaces the level music, represented by a ninja star ( red  group)
 * A rainbow "boom" visual (group unknown)
 * A confetti effect that plays while lanterns bounce on the upper part of the screen (group unknown)
 * An oinking sound effect that also causes the pig stamp from Mario Paint to pop up from wherever it was triggered (group unknown)
 * An effect involving the Super Famicom logo appearing where it was triggered ( blue  group)
 * Celebratory sparkles and bright screen accompanied by bursts of confetti from the sides of the screen, represented by a party popper ( yellow  group)
 * An effect represented by a quaver ( green  group)
 * An effect represented by a skull ( blue  group)
 * An effect represented by stars popping from a spot ( purple  group)