Walky

Walky is a regular enemy in Kirby's game series. It is a dangerous microphone that can't carry a tune for its life. It is designed to look like a traditional stage microphone. Because it is hinged between its two halves, it is able to fire out amplified sound waves. It commonly attacks by shouting a terrible cacophony as it trudges along. Walky, despite its name, is actually unable to walk in earlier games, nor is it even truly personified in some games!

Walky also appears as a trophy in Super Smash Bros. Brawl.

Kirby's Dream Land
According to Walky's Trophy in Brawl, it first appeared in Kirby's Dream Land. In this game, Walky is nothing but a mere item. In fact, this item does no harm to Kirby- it's actually a big help. If Kirby spits it out right after inhaling it, Walky emits a booming blast of sound destroying all enemies on screen.

This is perhaps the basis for the real Mike ability that would appear in following games.

Kirby's Adventure and Kirby: Nightmare in Dreamland
Paint Roller draws Walky as one of his drawings. It simply trots along until it walks right off screen. Rather than emitting a tasteless tune like it usually does, it just walks off. When inhaled, it gives the Mike ability. Because the Mike ability can kill Paint Roller almost instantly, it rarely gets drawn.

Kirby Super Star and Kirby Super Star Ultra
Walky rarely shows up on levels, strolling about. Occasionally, it stops to cry out a terrible tune. This sends forth three bad notes, one straight forth and the others diagonally forward. It gives the Mike ability when eaten again.

Kirby Air Ride
Walky appears as an obstacle in this game. It is seen singing quietly on the track, doing nothing to harm Kirby. When inhaled it, again, gives the Mike ability.

In Kirby: Right Back At Ya!
Walky appeared as a Demon beast sent by Nightmare Enterprises to King Dedede in the episode Abusement Park. Customer Service suggests (somewhat jokingly) to hold a Karaoke contest with it, the grand prize being Kirby's favorite food, Watermelons. Kirby would stand on the "stage" (actually the NME Teleporter) and be sent to NME to be destroyed by the overwhelming numbers of Demon Beasts there.

After several attempts to get on to the "stage" and sing (his attempts denied by Mayor Blustergas, Chef Kawasaki and Sir Ebrum to name a few) Kirby inhaled Walky and became Mike Kirby. Kirby then proceeded to sing Kihon wa Maru badly, but Customer Service sent him to NME anyway. However, Kirby's bad singing destroyed all the Demon Beasts and was sent back to Dreamland. By the time Kirby had finished singing, he had destroyed Castle Dedede.

In the end, Kirby wanted to sing again, but Walky ran away. Possibly because he didn't want to be inhaled again...