Mimic enemy line (The Lost Age)

In Golden Sun: The Lost Age, there are several enemies named Mimic that are visually identical and individually battled at several different points. Unlike a typical enemy line where the monsters are randomly encountered and battled while exploring environments, every Mimic in the game can be seen in environments and may be optionally interacted with in order to start a battle with them. Mimics are seen as unopened treasure chests, and when one of these are attempted to be opened the chest will sprout legs and pincers and automatically engage the player in a battle.

Mimics are always fairly tough individual enemies compared to the enemies that are randomly encountered when exploring an area, but are never anywhere near as threatening or durable as a boss battle. The various differently-leveled versions of the Mimic have similar sets of commands and elemental resistances, and are always guaranteed to drop some sort of valuable consumable item, including some items that permanently increase statistics. In this game only, there is a second, similar line of "recurring one-shot" enemies named Mad Plants, though these are fewer in number and better hidden.

Also see Mimic enemy line (Golden Sun) and Mimic enemy line (Dark Dawn).

In Golden Sun: The Lost Age
Nine different levels of Mimic can be found in the game. They are ordered by when each one can be first battled, which appropriately orders them by level and overall battling statistics:

Mimic (Kandorean Temple)
The earliest Mimic in this game, which is at level 9, can be fought early on in the game's first proper dungeon, Kandorean Temple. Its Slash Psynergy hits for fair Jupiter damage to a single Adepts, but its low PP rating means it will not be casting much of its Psynergy spells at all.

Its statistics are as follows:

It uses these battle commands:

Mimic (Air's Rock)
This Mimic, which is at level 17, can be fought in the first screen of the exterior ground portion of the gigantic Air's Rock.

Its statistics are as follows:

It uses these battle commands:

Mimic (Gabomba Statue)
This Mimic, which is at level 22, can be fought in the interior portion of the Gabomba Statue's non-cavernous, mechanical portion. Its Tornado Psynergy deals moderate Jupiter damage to multiple Adepts. It is particularly valuable because it contains a Hard Nut.

Its statistics are as follows:

It uses these battle commands:

Mimic (Aqua Rock)
This Mimic, which is at level 27, can be fought in the interior portion of Aqua Rock. Its Wild Growth Psynergy hits for moderate Venus damage to multiple Adepts.

Its statistics are as follows:

It uses these battle commands:

Mimic (Gaia Rock)
This Mimic, which is at level 28, can be fought in the interior portion of Gaia Rock, as one of two chests the party passes by on the linear Growth-based road to the innermost room with the Serpent. It Sonic Slash Psynergy deals moderate Jupiter damage to multiple Adepts, and it gains the Curse Psynergy.

Its statistics are as follows:

It uses these battle commands:

Mimic (Treasure Isle)
This Mimic, which is at level 34, can be fought in an area of the optional dungeon that does not require the Lift Psynergy to access (but it does need the Grind Psynergy); therefore its battling statistics are comparable to the earlier weaker enemies in the dungeon and not the stronger ones later on. Its Nettle Psynergy deals strong Venus damage to multiple Adepts. It is particularly valuable because it contains a Power Bread.

Its statistics are as follows:

It uses these battle commands:

Mimic (Jupiter Lighthouse)
This Mimic, which is at level 35, can be fought within Jupiter Lighthouse. Its Ice Missile Psynergy deals strong Mercury damage to multiple Adepts and it also gains the Condemn Psynergy to possibly instantly down an Adept.

Its statistics are as follows:

It uses these battle commands:

Mimic (Magma Rock)
This Mimic, which is at level 36, can be fought in the interior portion of Magma Rock. Its Stone Spire Psynergy deals strong Venus damage to multiple Adepts. It is particularly valuable because it contains an Apple.

Its statistics are as follows:

It uses these battle commands:

Mimic (Mars Lighthouse)
The last and most powerful Mimic in this game, which is level 38, can be fought in the main final dungeon of the game, Mars Lighthouse. Its Spark Plasma Psynergy deals both strong and widespread Jupiter damage to multiple Adepts. It is particularly valuable because it contains a Cookie. Note that when compared to the final Mimic in the first game, this Mimic actually has 200 less HP.

Its statistics are as follows:

It uses these battle commands: