Thief

Many Thieves were left orphans when Satan Morroc's revival tore families apart. They grew up fighting and stealing in the back streets of ruined Morroc and the Sograt Desert, saw the destruction of their town first-hand, and learned the shadow arts to protect what they love, by any means. This page follows the current International Ragnarok Online (Renewal) data.

Thieves are known for high FLEE from Improve Dodge and for fast damage from Double Attack with a dagger, both helped by high AGI. They can hide from monsters with Hiding and take extra items with Steal, so they usually earn more Zeny than other classes early on.

At job level 10 as a Novice, enter the Pyramid northwest of Morroc, cross the maze to the secret guild hall in the middle of the map, walk down the hallway and take the left door. The Thief Guide behind the desk makes you a Thief, gives you a Novice Main Gauche [3] and teaches Back Slide, Find Stone, Stone Fling and Sand Attack for free.

Older test (Pre-Renewal / Classic): after a few questions, a guild member sent you through an NPC outside the Pyramid to a mushroom farm, where you collected mushrooms worth 25 points (Orange Gooey Mushroom 1 point, Orange Net Mushroom 3 points) while aggressive Fabres and Chonchons guarded it. irowiki marks this test as no longer used on iRO Renewal.

A Thief has 6 skills, 51 skill points and 4 quest skills (Renewal values).

Icon	Skill	What it does	Max level
	Double Attack	High chance to hit twice when attacking with a dagger.	10
	Improve Dodge	Up to +30 FLEE; the bonus grows as an Assassin or Rogue, and Assassins also move faster.	10
	Steal	Steals an item from a monster, which can still drop it normally.	10
	Hiding	Hides you; useless against Boss, Insect and Demon monsters, and some area skills and items reveal you.	10
	Envenom	Poison melee attack with up to 150 extra damage and a chance to poison.	10
	Detoxify	Cures poison on yourself or a target.	—

Icon	Quest skill	What it does	Job level
	Back Slide	Instantly moves you 5 cells back.	35
	Find Stone	Finds stones to throw with Stone Fling.	20
	Stone Fling	Throws a stone for 50 Neutral damage that ignores armor; 5% chance to blind and/or stun.	15
	Sand Attack	Earth attack of 125% with a 15% chance to blind.	25

• Dagger build: poison the target with Envenom, dodge with Improve Dodge and Hiding, then auto-attack with high AGI so Double Attack procs often. The Thief has no area skill, so start on passive monsters.
• Bow build (niche): a bow lets the Thief hit from 5 cells away and use elemental arrows, and the extra DEX also helps Steal. Double Attack does not work with bows unless a card or item such as the Sidewinder Card grants it; then it works at the level your Thief has learned.

With the Catherina Von Blood [1] weapon you can level in the Sunken Ship from base level 3 up to 56: pay Fisk in Alberta 250 Zeny for the trip and use Magnum Break from a Marine Sphere Card, since the class has no area skill.

Without that weapon: kill Roda Frogs for the Geffen Bounty Board until level 21, Bigfoots for the Payon board until 41, then Orc Warriors, Orc Ladies and Orc Babies for the Eden Group and Geffen board quests until 60. A single quest turn-in never gives more than one full level, so hand quests in when your EXP bar is low.

• Eden Group equipment quests start at level 12 and give free gear for your class that is good enough up to level 99.
• In Izlude, the Enchanter Mounds quest adds Max HP +100 and Max SP +50 to the Cotton Shirt every new Novice gets, which stays useful after the job change.
• Stat and skill resets are available, so a build can be fixed later; see Stats for what each stat does.