Like Likes attack by swallowing a nearby character. The character is then spat out and damage is taken. Attacking the Like Like can KO it when it accumulates enough damage. They can also be picked up with the "Z" button and thrown at opponents for damage.
For every Like Like KO, 500 points are added to the Like Like KO bonus.
 In the Zelda series
Like Likes were somewhat common enemies within the games. Possessing a voracious appetite for shields, they would ooze towards anyone who donned them, in this case, Link. Upon swallowing him, they would rip his shield from him and spit him back out, requiring him to buy a new one. In future games however, they would go far as to eat the extra tunics if Link is wearing one at the time, though it is possible to retrieve the lost items after slaying the creature.
Like Likes appear as enemies as well as a collectible trophy in Melee.
 Trophy description
In The Legend of Zelda, these slow-footed monsters inhaled Link and ate his shield, just beating out Wallmasters for the coveted title of "Most Aggravating Enemies Ever." Supposedly, their name comes from an old, almost indecipherable Hyrulian proverb: "Shield-eaters and world leaders have many likes alike."
Game: The Legend of Zelda (07/87)