Sound test:
Successfully complete the normal games, then finish the Arena. A sound test option will become available.

In-game reset:
Hold L + R and press Start.

Kirby's helper self-destruct:
Have the helper continuously press A to begin flashing and die. This is helpful when playing in two player mode, when the Kirby player has a skip that he or she wants to keep. The helper can do this, then touch the enemy with the desired power.

When you have the ability on the out-world map to move around, look for a semi-large green star. Press A to warp to a new planet named "?". Complete the planet, and you will find Take And Copy/Copy at the end.

Fire ability:
The fire ability can be found after the very first part of the Hotbeat level. The large space filled with lava/coals has a door in it. Hit the bomb block to create a space. Full or very high health is required for this next step unless you get the Invincible Candy, which is found fairly close to it. Enter the space through the lava. You will get burned at least two times. Go through the space, and the fire ability will can be obtained inside (after defeating a few Burnin' Leos).

Fire Kirby:
You can control Kirby's fire by pressing Action and the D-pad. To set Kirby on fire, if you are in the left position hold Fire and hold Right.

Powerful duo:
This move can only be used in two player mode. Player two must have Wheelie, and it does not matter what Kirby has. Player two will control the movement, while player one shoots stars in any direction. Note: It may not shoot far, but it can kill a Boss in about three to four hits.

Defeating Sir Meta Knight:
In the Meta Knight game, if you wait a long time without grabbing the sword, you will be able to use the ability you currently have against him.

Defeating Waddle Dee:
To kill Waddle Dee in the arena, just inhale.