Kretin

Kretin (known as Keratin in the British English version) is a molecule with two forms called Alpha Kretin and Beta Kretin (Alpha Keratin and Beta Keratin in the British English version) who, in Mario & Luigi: Bowser's Inside Story, kidnaps Princess Peach. After a long chase in the Flab Zone, Mario & Luigi finally reached Kretin. Using the spin move, Mario and Luigi free Peach from the grips of it, but immediately get attacked by Kretin. Just before the battle, Luigi asks Starlow to fight Kretin instead of him. Starlow doesn't like his idea and smacks Luigi into Kretin, starting the battle.

In battle, Kretin will begin in its Alpha Kretin form. Each individual unit of Kretin can be either red (with angry eyes in the remake) or green (with shocked eyes in the remake), and can only be damaged by the Mario brother of the corresponding color. When one unit receives enough damage, it turns blue (with closed eyes in the remake) and is defeated.

The Alpha Kretin's only attack is creating a ball of blue electric energy that will move through its body. It will then start to glow, turning its arm into a cannon shape. The Alpha Kretin will start to shoot balls of energy towards the Bros. The player can know which Bro. the ball will go toward by the order the beam went through the body, red for Mario, green for Luigi, and blue for neither bro. This means that the more Kretins defeated, the less balls Alpha Kretin can shoot. This attack is countered with hammers. If hit, the Bros. can temporarily have lower defense.

After all the six parts of Kretin are blue, it will fall apart. Five units disappear, but one remains. It will proceed to create five clones in a hexagon pattern. These clones are very weak and are defeated in a single attack. If a duplicate is defeated, the real Kretin will simply create another on the next turn. Creating a new clone does not take up a full turn; Kretin can recreate the duplicate and attack in the same turn. In its Beta Kretin form, it starts to jump around with the other duplicates, trying to confuse the player by jumping to a different position. Its main attack is surrounding the bros in a hexagon shape, while they all start to charge up electricity. When one of the Kretins jumps, the electricity moves on to that spot. This attack can be avoided by jumping. After the fight, Kretin is defeated. A stronger version of Kretin can be fought in The Gauntlet, this form is known as Kretin X.

Trivia

 * Alpha Kretin vaguely resembles the logo of AlphaDream, the company that creates the Mario & Luigi series.
 * "Kretin" comes from "keratin", a body chemical, and "cretin", a derogatory term for a bully.
 * In the original game, using Bros. Attacks (e.g. Fire Flower) counts as attacking either red or green Kretins simultaneously if either Mario or Luigi are using the Bros. Attack. This was changed in the remake to block attacks if both Mario and Luigi are attacking.

Karotino Carotene