After reading this you can look up a monster in MapleStory Classic World (Classic World from here on), see which element it is weak to and which it resists, and decide whether your Fire/Poison Wizard, Ice/Lightning Wizard or Cleric should attack it or pick a different target. The tables cover the elements the monster data uses: Fire, Ice, Lightning, Poison and Holy.
Assumptions: you play a Magician-branch character, solo, and you read each row at the monster level shown. The data lists element names only. It does not list a damage multiplier, so this guide gives no percentage for "bonus damage". Where a cell is empty in the source we write "not recorded" rather than guess. In-game numbers are per mapleclassic.wiki; dates and launch scope are per Nexon.
How to read the weakness data
Each monster row carries the fields that matter here: Weak to, Resists, Undead and a primary location. A weakness is the element worth casting. A resistance is the element to avoid. The undead flag matters mostly to Holy users, because every Holy-weak monster in the Zombie, Skeleton, Wraith and Mummydog families is also flagged undead.
Two details to keep in mind before you use the lists:
- "None" is different from blank. A row such as Stump shows None under Resists, which the source records as no resistance. A row such as Mushmom or Skeledog has an empty Resists cell, which means the resistance is not recorded. Treat blank as unknown.
- The list is longer than the launch roster. The wiki's launch monster table holds 66 monsters (Victoria Island and Maple Island), with Forgotten Hollow entries included but unreachable for now. The elemental list we work from runs longer and includes locations in Orbis, which is held back along with El Nath and the rest of Ossyria. A row is a property record, not proof that you can fight the monster today.
Bosses first: elements for the fights you can take
Per Nexon's Grand Launch release notes, you can challenge Mano, Stumpy, Mushmom, Shade, Zombie Mushmom and Jr. Balrog, plus King Slime inside the Kerning City Party Quest. Mano has no row in the elemental list, so it is not covered here. Rotten Mushmom is in the table but lives in Forgotten Hollow, which Nexon says opens in November, so it is shown for reference only.
| Boss | Level | Weak to | Resists | Undead | Location listed |
|---|
| King Slime | 32 | None | Fire, Holy, Ice, Lightning | no | Not recorded |
| Stumpy | 35 | Fire | Lightning | no | Parched Land |
| Mushmom | 40 | Fire | Not recorded | no | Someone Else's House |
| Shade | 48 | Holy | Poison | yes | Cabin of the Forsaken |
| Zombie Mushmom | 55 | Holy | None | yes | The Grave of Mushmom |
| Rotten Mushmom (not reachable yet) | 60 | Fire, Holy | Poison | yes | Someone Else's Grave |
| Jr. Balrog | 80 | Holy | Poison | no | Not recorded |
The table splits the bosses into two camps. Stumpy at level 35 and Mushmom at level 40 are Fire targets, so a Fire/Poison Wizard has a listed weakness to hit on both. An Ice/Lightning Wizard should note that Stumpy resists Lightning, so a Lightning-based attack runs into a listed resistance on that fight. Ice is neither a weakness nor a resistance for Stumpy in the source.
Shade at level 48, Zombie Mushmom at level 55 and Jr. Balrog at level 80 are Holy targets, which is the Cleric's lane. Shade and Jr. Balrog both resist Poison, so a Poison-based attack hits a listed resistance there. Zombie Mushmom lists None for resistances.
King Slime at level 32 is the odd one. It has no weakness and resists Fire, Holy, Ice and Lightning. Poison is the one element in this data that the source does not list as resisted for it. We have no figure for how much that matters, so treat it as something to check in the Kerning City Party Quest rather than a recommendation. Nexon lists the Party Quest as open from level 21.
Boss HP, respawn and drops are not part of this data. The Stumpy and Jr. Balrog boss guides cover those separately.
Levels 5 to 24: the early weakness map
| Monster | Level | Weak to | Resists | Location listed |
|---|
| Stump | 5 | Fire | None | The Tree That Grew II |
| Slime | 6 | Lightning | None | The Tree That Grew I |
| Dark Stump | 11 | Fire | None | Not recorded |
| Octopus | 12 | Lightning | None | Not recorded |
| Green Mushroom | 14 | None | Poison | Mushroom Garden |
| Bubbling | 15 | Lightning | None | Not recorded |
| Axe Stump | 17 | Fire | None | Not recorded |
| Ghost Stump | 19 | Fire | Not recorded | Excavation Site I |
| Dark Axe Stump | 23 | Fire | None | Not recorded |
| Zombie Mushroom | 24 | Holy | None | Not recorded |
The pattern is easy to remember. Every Stump variant in this band is weak to Fire: Stump at level 5, Dark Stump at level 11, Axe Stump at level 17, Ghost Stump at level 19 and Dark Axe Stump at level 23. Slime at level 6, Octopus at level 12 and Bubbling at level 15 are weak to Lightning. A Fire/Poison Wizard therefore has a clear weakness to aim at on the Stump line, and an Ice/Lightning Wizard has one on the Slime, Octopus and Bubbling line.
The one resistance in this band is Green Mushroom at level 14, which resists Poison. If you rely on Poison-based damage at level 14, this is the row where the source says you are working against the monster's element. Zombie Mushroom at level 24 is the first Holy weakness and the first undead flag in the list.
The table does not say how many of each monster spawn on a map, how much HP each has, or how much EXP it gives. Those fields are not in the elemental data, so we do not rank these rows by EXP per hour here. The training-spot ranking guides handle that.
Clerics: Holy weaknesses and Holy resistances
| Monster | Level | Weak to | Resists | Undead |
|---|
| Zombie Mushroom | 24 | Holy | None | yes |
| Zombie Lupin | 41 | Holy | None | yes |
| Skeledog | 44 | Holy | Not recorded | yes |
| Mummydog | 47 | Holy | Not recorded | yes |
| Wraith | 48 | Holy | None | yes |
| Rotten Mushroom | 56 | Holy | Poison | yes |
| Coolie Zombie | 57 | Holy | Poison | yes |
| Skeleton Soldier | 57 | Holy | Not recorded | yes |
| Minor Zombie | 58 | Holy | Poison | yes |
| Officer Skeleton | 63 | Holy | Not recorded | yes |
| Commander Skeleton | 73 | Holy | Ice, Poison | yes |
For a Cleric using Holy-element attacks, the undead families are the consistent weakness targets from level 24 up, and every row above carries the undead flag. Several of them (Rotten Mushroom, Coolie Zombie, Minor Zombie and Commander Skeleton) also resist Poison, which is a reason a Fire/Poison Wizard and a Cleric may want different targets inside the same undead map.
Not every monster is a Holy target. The four Fairy entries (Fairy 1, Fairy 2, Fairy 3 and Fairy 4, all level 29) resist both Lightning and Holy and are weak to Poison. King Slime at level 32 resists Holy as well. Star Pixie at level 35 (Cloud Park I), Lunar Pixie at level 45 (Cloud Park IV) and Luster Pixie at level 52 (Cloud Park VI) all resist Holy. Luster Pixie also resists Fire, Ice and Lightning, and the source lists no weakness for it. Sentinel at level 30 resists Holy and Lightning, but its listed location is on a floor of the Orbis tower, and Orbis is not available at launch.
Fire against Ice: the opposite-pair pattern
Scan the mid-level rows and a pattern appears: Fire and Ice tend to be opposites. A monster weak to Fire usually resists Ice, and a monster weak to Ice usually resists Fire. A caster who reads only the weakness column and ignores the resist column will sometimes pick the wrong spell.
| Pairing in the data | Monsters and levels |
|---|
| Weak to Fire, resists Ice | Ligator (31), Leatty (32, Snowy Hill), Jr. Grupin (33, Garden of Green I), Raffle (40), Cold Eye (40), Jr. Yeti (50, Watch Out for Icy Path I), Croco (52), Grupin (53, Garden of Green II), White Fang (59, Wolf Territory V), Pepe (60, The Crown-Flyer) |
| Weak to Ice, resists Fire | Fire Boar (32), Jr. Cellion (33, Garden of Red I), Copper Drake (45), Firebomb (51, The Cave of Trial III), Cellion (53, Garden of Red II), Red Drake (60), Bain (90, The Cave of Trial III) |
| Weak to Ice, resists Lightning | Jr. Lioner (33, Garden of Yellow I), Lioner (53, Stairway to the Sky I), Tauromacis (70), Taurospear (75) |
| Weak to Fire, resists Lightning | Stumpy (35, Parched Land), Myewood (54) |
| Weak to Poison, resists Lightning and Holy | Fairy 1, Fairy 2, Fairy 3, Fairy 4 (all 29) |
The practical reading: at level 33 an Ice/Lightning Wizard has a listed weakness on Jr. Cellion (Ice) and Jr. Lioner (Ice), but Jr. Lioner also resists Lightning, so the Lightning half of that build works against it. Jr. Grupin at level 33 flips the situation: it is weak to Fire and resists Ice. A Fire/Poison Wizard at the same level has the listed weakness on Jr. Grupin and the listed resistance on Jr. Cellion.
A few rows break the pair rule. Aqumander at level 43 is weak to Lightning and resists Ice. Duskmander at level 50 is weak to Ice and resists Poison. Fire Sentinel and Ice Sentinel, both level 30, are a true mirror pair: Fire Sentinel is weak to Ice and resists Fire, while Ice Sentinel is weak to Fire and resists Ice. Their listed floors sit in the Orbis tower, and Orbis is held back at launch, so treat those two as reference rows only.
Rows that are not a launch target
Several rows point at locations that depend on content Nexon has not released. The Orbis tower floors are the clearest case: Jr. Pepe, Dark Leatty, Fire Sentinel, Ice Sentinel and Sentinel all list them. The wiki states that Orbis, El Nath and the rest of Ossyria are held back, so none of those floors can be reached at launch. Third job advancement is not available at launch either, so a high-level row such as Lycanthrope at level 80 or Bain at level 90 describes the monster, not a place a character can stand today.
The list also holds level 200 entries: Super Slime (The Deep Forest of Patience, Step 5), Super Ribbon Pig (Utah's Pig Farm), Super Stirge (B1, Area 2), Ultra Jr. Necki 1 and Super Jr. Necki (The Forest of Patience, Step 4). All of them list None for both weakness and resistance, so elemental choice gives you nothing to work with on those rows. The Forest of Patience entries are tied to the jump quest, covered in a separate guide.
How to use the data: a short checklist
- Find your target's level and name in the tables above.
- Check Resists first. If your main element is listed there, expect to be working against the monster.
- Check Weak to second. If your element matches, that monster is a candidate for your build.
- Check the Undead column if you are a Cleric. It marks the Holy-weak undead families in the list.
- Check the location. If it names an area that is held back, such as the Orbis tower, skip it. If it is blank, the source does not tell you where the monster lives.
What this data does not tell us
- It gives no damage multiplier for weak or resisted elements, so we cannot say how much more or less damage you deal.
- It records no spawn counts, so we cannot compute kills per hour.
- It records no drop rates for these monsters.
- Blank Resists cells (Ghost Stump, Mushmom, Skeledog, Mummydog and others) mean not recorded, not no resistance.
- Blank location cells mean the source does not give a primary map, so check in game.
Given those gaps, the safest framing is a conditional one. At level 35 as a Fire/Poison Wizard fighting Stumpy, Fire is the listed weakness. At level 55 as a Cleric fighting Zombie Mushmom, Holy is the listed weakness. Beyond that, the numbers are not in the sources yet.
Last verified 2026-10-30 against mapleclassic.wiki data synced 2026-10-30 and Nexon's Classic World FAQ.
Frequently asked
- What is Stumpy weak to in Classic World?
- Stumpy, a level 35 boss listed at Parched Land, is weak to Fire and resists Lightning, per mapleclassic.wiki. Ice is neither a weakness nor a resistance for it in the data.
- What element should a Cleric use against undead monsters?
- Holy. Every undead-flagged row in the list, from Zombie Mushroom at level 24 to Commander Skeleton at level 73, is weak to Holy. Several of them also resist Poison.
- Is King Slime weak to any element?
- No. King Slime at level 32 lists None for weakness and resists Fire, Holy, Ice and Lightning. It appears inside the Kerning City Party Quest, which Nexon lists as open from level 21.
- Do elemental weaknesses give a set damage bonus?
- The data we use lists element names only, with no multiplier, so we cannot give a percentage. Check in game before assuming a number.
- Can I fight the Orbis monsters like Sentinel or Jr. Pepe at launch?
- No. The wiki states that Orbis, El Nath and the rest of Ossyria are held back, so rows listing the Orbis tower are reference only.
- Which monsters are weak to Fire and resist Ice?
- Examples from the table are Ligator at level 31, Leatty at level 32, Jr. Grupin at level 33, Raffle and Cold Eye at level 40, and Pepe at level 60. A Fire spell suits these; an Ice spell does not.
