Snakes are standard enemies in the Mother series. A snake is always one of the weakest enemies found at the beginning of the game, but may have a more powerful version later. Except for the special Kraken, Bionic Kraken and Oh-So-Snake, they are able to poison the player's characters. In Mother 3, two biological chimeras have snake parts.
Rattle Snakes are the more powerful version of the Snakes. They appear in the Yucca Desert only.
(+) Max HP: 100 - Max PP: 0 - Offense: 65 - Defense: 128 - Fight: 60 - Force: 20 - Speed: 60 - Strength: 60 - Wisdom: 80 - Exp.: 57 - Money: $54 - Item: None
Red Snakes can be found near Youngtown, Ellay and the swamp connecting them. They are normally rare to find and tend to flee the battle. They are not really powerful, but they do give an incredible amount of experience. Red Snakes are the first of the enemies with this characteristic that can be seen in EarthBound and Mother 3 as well.
A Mighty Bitey Snake is a type of snake from Mother 3. It does not have a more powerful counterpart, unlike previous snakes from the series. It is the first enemy found in the game able to poison characters.
Snake as items
A Snake is also an item usable in battle. It damages one target enemy and may sometimes poison it. A Viper is a more powerful version that always poisons the enemy. A Snake Bag is an item that never runs out of Snakes.
The Rope Snake is an important character in Mother 3, carried as an item. In three occasions, it uses its big and extendable jaw to help the characters cross obstacles or hold into flying vehicles, but fails at the latter two.
The Oh-So-Snake is the final boss in Chapter 2 in Mother 3. After Duster, Kumatora, and Wess discover the Hummingbird Egg in Osohe Castle, a trap causes them to fall into the castle moat where the Oh-So-Snake attacks them. The snake can make a wave attack able to damage all the party members, and is weak to thunder, but strong to ice and fire.
(+) Max HP: 1237 - Max PP: 0 - Offense: 82  - Defense: 28  - IQ: 16  - Speed: 23  - Exp.: 568 - Money: 0 DP - No chance of getting an item
The Kraken is a sea serpent found when the party is in a ship traveling from Summers to Scaraba. This boss can breathe fire, use lightning attacks, use PK Flash, generate a tornado or emit a pale green light which cancels all PSI effects, and is strong against Hypnosis. In the Sea of Eden in Magicant, these appear as well, but they are not as difficult to fight anymore. As trivia, in a restaurant in Summers, one can buy Kraken soup.
(+) Max HP: 1097 - Max PP: 176 - Offense: 105 - Defense: 166 - Speed: 21 - Guts: 1 - Exp.: 79267 - Money: $3049 - No chance of getting an item
A Bionic Kraken is a more powerful sea serpent, this time found in the Cave of the Past. This one can do the same actions as the regular Kraken, except it cannot cast use PK Flash. Strong against Hypnosis and freeze attacks. In the Sea of Eden in Magicant, these appear as well, but they are not as difficult to fight anymore. It is also notable for dropping the game's best bat, the Gutsy Bat.
Lethal Asp Hieroglyph
The Slitherhen and Cattlesnake are chimeras with snake parts.