Metal Block

A Metal Block is a gray block resembling a gray block of iron. In certain titles they have small nibs around the central protrusion resembling large rivets. Metal Blocks first appear in Kirby's Adventure. There are several ways to destroy a Metal Block, including through the use of several Copy Abilities: Burning, Fire, Metal, Hammer, Master, Missile, Magic, Smash, Stone, Triple Star, and UFO. Most of the time, Metal Blocks are in the way of power-ups or hidden rooms.

In Kirby: Canvas Curse, Metal Blocks can only be broken by being shot through a cannon or using King Dedede's hammer. A Metal Block is one of the several sketches in Paint Panic.

In Kirby: Squeak Squad, Metal Blocks can also be removed with a third-level Star Spit.

In Kirby and the Rainbow Curse, Metal Blocks can only be broken by using a Star Dash or by using a transformation's special attack.