Thief enemy line

Thieves and bandits are encountered several times in Golden Sun and Golden Sun: The Lost Age. Like monsters, the Player's party will sometimes fight against them. Often, they operate in groups, and in secret. Lunpa the Righteous Thief is a notable exception from typical thieves.

It should be noted that in the games, Thief refers to one type of monster, Bandit a second type, and Brigand a third.

Vault Gang of Thieves
In Golden Sun, the town of Vault had a series of thefts. Isaac and the party found the hideout of the thieves and defeated them. This gang consisted of three men: 2 Thieves and a Bandit. Although imprisoned, the gang later escaped.

The Vault thieves may be encountered again in Golden Sun: The Lost Age, but only if the player transferred data from Golden Sun. As Felix's party leaves Madra, the gang appears when they learn he knows Isaac. Hoping to get revenge, they attack Felix's party. When defeated, the Vault gang retreats and decide to leave Isaac alone.

Lunpa Thieves
A group of brigands based in the town of Lunpa. Lead by Dodonpa, this gang was powerful, having control of a whole town and a massive fortress complex. This gang consisted of Brigands, and the guards who patrolled the fortress.