Buzz Blob

Buzz Blobs appear to be quivering piles of a jelly-like substance, very similar to Chuchus or Zol. Despite their seemingly formless constitution, these monsters somehow manage to stand upright and walk with what appear to be feet, but expectedly move at a very slow pace.

Characteristics
The body of a Buzz Blob can be charged with electricity, but this seems to be an ability that requires activation. They are only known to activate this ability when under attack or while direct contact is made with them. If Link strikes a Buzz Blob with his sword, or any melee weapon, it will electrocute him. Depending on the game, it may not take any damage while electrocuting its target. Any indirect weapons, such as Ember Seeds or the Bow, are generally quite effective. Stunning the enemy with a Boomerang before attacking it with a Sword is a very effective method as well.

The combination of their "blob" shape and "buzz" electrocution attack is most likely where Buzz Blobs received their apt name.

In the DX version of Link's Awakening, a boss known as the Giant Buzz Blob appears in the Color Dungeon. The Manhandla in Oracle of Seasons also appears to be related to a Buzz Blob.

Cukeman
Sprinkling Magic Powder or a Mystery Seed onto a Buzz Blob will transform it into a creature called a Cukeman, also known as a Potatohead. If Link chooses to speak with it, the Cukeman gives him confusing advice about the game and various things in it. Cukemen are still electrified and do not change their attack pattern, so they can still be dangerous if Link is not careful.

In most games of the Cukeman's appearance, the talk button is shared with an attack button, so if the player is standing in front of it pressing the button will result in talking to it instead, or possibly performing both actions at once. It is not possible to talk to it if it is stunned with the Boomerang.

Strangely, if a Cukeman is frozen with the Ice Rod or Ether Medallion, then smashed with the Magic Hammer, it will, instead of shattering, turn back into a Buzz Blob again.

Since Four Swords Adventures doesn't have magic powder or mystery seeds, Cukemen cannot be found anywhere in the game, despite the presence of Buzz Blobs.

Confusion with ChuChu
When Buzz Blobs were initially introduced in A Link to the Past, Chuchus had not yet appeared in the series. For one who plays the series "backwards", it could falsely lead one to assume Buzz Blobs and ChuChus are one and the same due to the similar appearance of Buzz Blobs and ChuChu that appear in the Toon Link games such as The Wind Waker. This is particularly true with Blue ChuChu, which possess an electric attack similar to Buzz Blobs. It is likely that Buzz Blobs were a large influence on the design of ChuChus, and that the enemies may be very closely related, but Buzz Blobs remain in games beyond the appearance of ChuChu. In Four Swords Adventures, some Buzz Blobs will leap at Link in a similar manner to ChuChus, but unlike ChuChus they remain constantly electrified.

Trivia
The German translator of Link's Awakening, Claude M. Moyse, hid some controversial jokes in the game. When Link presses A next to a Cukeman, it says one of four different sentences. These phrases were replaced by more neutral ones in. The phrases are: Moyse has been known to take liberties in his translations, which has angered some fans. Curiously, typing MOYSE on the player-creation screen causes the game to play music that is not usually heard.
 * NIE OHNE KONDOM! (Never without a condom!)
 * Irgendwelche Sorgen, Nöte oder Probleme? (Do you have any sorrows, hardships or problems?)
 * !STOP THE WAR! GIVE PEACE A CHANCE!!
 * Gib mir Deinen Saft, ich geb' Dir meinen... (Give me your juice, I'll give you mine...)