Vermin enemy line

The Vermin and Mad Vermin are species of monsters found in Golden Sun and Golden Sun: The Lost Age. These monsters, resembling spherical, colorful mice with forks (it can be said that it bears a strong resemblance to Pokémon’s Marill), are palette swaps of each other and have differing levels of power and defense. In Golden Sun there are two versions of the Vermin enemy, one seen in prologue sequences and one seen afterwards in the overworld.

Vermin (Before)
A small blue member. The first Vermin features 20 HP, 23 Attack, 7 Defense, 7 Agility, and 2 Luck. Its resistances are quite low, and it is very succeptible to Mars Psynergy.

Vermin are about as basic an enemy as can be fought. They can only attack with a physical attack and use the Defend command to lower damage done that turn.

Felling this Vermin yields 2 EXP, 2 coins, and in uncommon cases, an Herb. These Vermin are battled in the prologue sequence to Golden Sun, first in Vale during its dark and stormy season while the player is Young Isaac and Young Garet, then later in Sol Sanctum as normal Isaac and Garet, and Jenna is in the party. This makes it the first enemy the player ever battles, and an extremely weak one at that.

Vermin (After)
A small blue member. The second version of Vermin has 36 HP, 32 Attack, 7 Defense, 9 Agility, and 2 Luck. Its resistances are quite low; it is very succeptible to Mars Psynergy.

While this slightly stronger version of Vermin can attack physically and defend like the earlier version, it may now also flee the battle.

Felling this version of Vermin yields 4 EXP, 4 coins, and in uncommon cases, an Herb. This Vermin is battled in the overworld map, the upper-left region of Angara that encompasses Vale, Vault, Lunpa, and Goma Caves. It is still a very easy opponent to face even at that point in time.

Mad Vermin
A small red member. The Mad Vermin has 131 HP, 164 Attack, 22 Defense,67 Agility, and 2 Luck. Its resistances are quite low; it is very succeptible to Mars Psynergy.

The Mad Vermin loses the Vermin’s ability to Defend and Flee, but gains the ability to use the far more powerful Monster skill Onslaught, though its use of that is occasional enough that the Mad Vermin is often defeated before it uses it.

Felling the Mad Vermin yields 55 EXP, 80 coins, and in very uncommon cases, an Herb. Mad Vermin are battled in the overworld map, the lower-left region of Angara that encompasses Kalay in Golden Sun, and in various overworld areas during The Lost Age accessible when the Lemurian Ship is acquired.