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11 Overview
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33 Caterpillar (小草虫) is a hidden rare spirit in Roco Kingdom: World. It triggers at the same Holy Feather Altar statue as Stone Stone, but requires a water-type throw rather than a ground-type throw.
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55 How to Obtain
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88 Teleport to the Holy Feather Altar Magic Source in Old Airship Route.Approach the statue.Throw a water-type spirit at the statue. Caterpillar spawns around the statue.Capture with any Gulu Ball.
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1010 Base Stat Line
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1212 The figures below are the values carried in the game's own spirit encyclopedia data for 小草虫. The six stats sum to a species total of 323.
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1414 StatBase valueHP (生命)73Physical Attack (物攻)40Physical Defence (物防)50Magic Attack (魔攻)43Magic Defence (魔防)57Speed (速度)60Total323
1515 Encyclopedia Entry
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1717 FieldValueDex numberNO.099Chinese name小草虫Element typeBug / Grass (虫系・草系)Evolution stageStage 1Species class昆虫类精灵Height range0.47~0.67MWeight range2.1~3.4KGMovementWalking (步行)RideableYes, single riderPerception range40Starlight value24Shiny variantYesFavoured environmentsGrassDisliked environmentsFire, GroundAdded in version1.0.0 (2026-03-26)
1818 Level-Up Move List
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2020 小草虫 learns the following moves by level. Power is blank for moves that do not deal direct damage, and energy is the cost paid to use the move in battle.
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2222 LevelMoveElementCategoryPowerEnergy1虫茧BugStatus-11啃咬BugAttack4001防御NormalDefence-15飞叶GrassAttack4008假寐BugStatus-211抓挠NormalAttack35016虫群智慧BugStatus-322虫结阵BugDefence-224汲取GrassAttack30131孢子GrassStatus-333飞断BugAttack20140花炮GrassStatus-241花香GrassAttack60148芳香诱引GrassStatus-249网缚BugAttack602
2323 See Also
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2525 Old Airship Route - spawn zoneStone Stone - sibling statue triggerHidden Secrets and Collectibles - full hidden spirit list
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2727 Statue Trigger Details
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2929 The Holy Feather Altar statue accepts a single throw to spawn Caterpillar. The thrown spirit is not consumed and stays in the player's party. Any Water-type spirit at any level qualifies as the trigger; a low-level Water-type works as well as a fully evolved one.
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3131 Stone Stone shares the same statue and reacts to a Ground-type throw. Carrying both a Water-type and a Ground-type before teleporting to the altar lets a player complete both hidden spawns on the same visit.
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3333 Capture Tips
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3535 Approach the spawn from behind once it appears. Backstabbing doubles the first throw's capture rate.Caterpillar's base capture rate is lower than ordinary wild spirits in the area, so an Advanced Gulu Ball is recommended over the Normal tier.If the spawn despawns before being caught, leave the zone and re-trigger the statue. The mechanism is repeatable for the throw, but the hidden spirit itself is one-time per account.
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3737 Element Notes
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3939 Caterpillar is a dual Bug and Grass-type spirit, and its species ability is Flower Spirit (花精灵). Bug-type matchups: strong into Grass, Dark, and Phantom; weak to Fire, Wing, and Mech. The secondary Grass typing shifts some of those matchups, so check the full chart on the Element Types page before leading with it. Carry coverage that handles its weaknesses if Caterpillar is the active spirit during exploration.