English
Español
Português
Tiếng Việt
Русский
Last updated: August 26, 2026
On this page: Spawn Map · Getting There · All Monsters · Full Stat Table · Best Exp Target · Resistances · Drop Tables · Where Each Monster Spawns · FAQ
MU Online Kanturu Undergrounds – Monsters, Spawn Map & Level Guide
Kanturu Undergrounds (map 137) holds 6 monster types across 418 spawn points, spanning levels 615–620. The warp costs 50,000 zen and needs character level 1250. Every number on this page comes straight from the Season 21 server files, and the spawn map below is drawn from the map’s own terrain data.
Kanturu Undergrounds in 3D
Kanturu Undergrounds Spawn Map
Colour key — ordered by level, lowest first:
Underground Persona Lv 615
(Elite) Underground Dreadfear Lv 620
(Elite) Underground Persona Lv 620
(Elite) Underground Twin Tail Lv 620
Underground Dreadfear Lv 620
Underground Twin Tail Lv 620
Getting There
This map family has 1 separate warp destinations, each with its own level gate and cost:
| Destination | Min level | Zen |
|---|---|---|
| Kanturu Undergrounds | 1250 | 50,000 |
This map has a level penalty of 1220. Characters below that level take reduced experience and increased damage here, so arriving early is punished even though the warp will let you in.
All 6 Monsters in Kanturu Undergrounds
Sorted by level. Health, damage and defence are the server’s base values before any server-specific multiplier.
Lv 615 · 3,951,000 HP
20000–21150 dmg · 8050 def
Lv 620 · 4,425,000 HP
19000–19600 dmg · 8600 def
Lv 620 · 4,201,000 HP
20600–21300 dmg · 8250 def
Lv 620 · 4,343,000 HP
18100–18700 dmg · 8800 def
Lv 620 · 4,175,000 HP
18600–19100 dmg · 9160 def
Lv 620 · 4,093,000 HP
17600–18100 dmg · 8610 def
Full Stat Table
Everything the server file records for each monster on this map.
| Monster | Lv | HP | Damage | Def | M.Def | Atk rate | Block | Range | Respawn | Spawns |
|---|---|---|---|---|---|---|---|---|---|---|
| Underground Persona | 615 | 3,951,000 | 20000–21150 | 8050 | 0 | 10200 | 5000 | 3 | 8s | 86 |
| (Elite) Underground Dreadfear elite | 620 | 4,425,000 | 19000–19600 | 8600 | 0 | 10000 | 5360 | 3 | 15s | 7 |
| (Elite) Underground Persona elite | 620 | 4,201,000 | 20600–21300 | 8250 | 0 | 10300 | 5300 | 3 | 15s | 4 |
| (Elite) Underground Twin Tail elite | 620 | 4,343,000 | 18100–18700 | 8800 | 0 | 9700 | 5490 | 3 | 15s | 4 |
| Underground Dreadfear | 620 | 4,175,000 | 18600–19100 | 9160 | 0 | 9900 | 5060 | 3 | 8s | 135 |
| Underground Twin Tail | 620 | 4,093,000 | 17600–18100 | 8610 | 0 | 9400 | 5190 | 3 | 8s | 182 |
(Elite) Underground Dreadfear has the most health here at 4,425,000, and (Elite) Underground Persona hits hardest at up to 21300 damage. The most common spawn is Underground Twin Tail with 182 spawn points of the 418 on the map.
Best Target for Experience
The server stores an ExpLevel per monster, which drives the experience it awards. Dividing that by health gives you experience per point of damage you have to deal — the number that actually decides where you stand and grind.
| Monster | Lv | Exp value | HP | Exp per 1,000 HP | Spawns |
|---|---|---|---|---|---|
| Underground Persona | 615 | 1,520 | 3,951,000 | 0.4 | 86 |
| (Elite) Underground Persona | 620 | 1,605 | 4,201,000 | 0.4 | 4 |
| Underground Twin Tail | 620 | 1,530 | 4,093,000 | 0.4 | 182 |
| Underground Dreadfear | 620 | 1,560 | 4,175,000 | 0.4 | 135 |
| (Elite) Underground Twin Tail | 620 | 1,615 | 4,343,000 | 0.4 | 4 |
| (Elite) Underground Dreadfear | 620 | 1,620 | 4,425,000 | 0.4 | 7 |
Underground Persona is the most efficient kill on this map at 0.4 exp per 1,000 HP — 1.1x better than (Elite) Underground Dreadfear at 0.4. With 86 spawn points it is also easy to find.
Read this as a ranking, not as absolute numbers. Almost every private server rewrites experience rates, so the exp values here are the unmodified Season 21 baselines. The order of the table survives most rate changes; the raw figures will not match your server.
Elemental Resistances
No monster on Kanturu Undergrounds carries any elemental resistance — every one of them takes full ice, poison, lightning and fire damage. That makes it a clean map for testing elemental builds.
Drop Tables – Straight From the Server Files
Each monster rolls its own item bag. The tables below show every entry in that bag and its share of the bag — the chance of getting that item when the monster drops an item from its bag at all.
How a drop is decided on this configuration — each kill rolls one wheel: about 29.8% of kills hit the monster’s own bag below, 6.0% the shared rare pool further down, 10.0% a zen bundle, and roughly 50% drop nothing. Other servers retune these bands — the bag shares are the part that carries over.
Underground Persona — 255 items in bag
| Item | Item level | Share of bag | Odds per drop |
|---|---|---|---|
| Scroll of Evil Spirit | – | 2.29% | 1 in 44 |
| Increase Health Parchment | – | 2.29% | 1 in 44 |
| Magic Arrow Act | – | 2.29% | 1 in 44 |
| Shining Bird Law Book | – | 2.29% | 1 in 44 |
| Marvel Burst Law Book | – | 2.29% | 1 in 44 |
| Orb of Twisting Slash | – | 2.29% | 1 in 44 |
| Spin Step Scroll | – | 2.29% | 1 in 44 |
| Mithril Fragment | – | 2.01% | 1 in 50 |
| Goblin_Treasure_Box_Blue | – | 1.20% | 1 in 83 |
| Mysterious Stone | – | 1.20% | 1 in 83 |
| Golden Sentance EXC skill | – | 0.95% | 1 in 105 |
| Demonic Pants EXC skill | – | 0.82% | 1 in 122 |
| Complex Potion | – | 0.67% | 1 in 149 |
| Imp | – | 0.67% | 1 in 149 |
| Horn of Uniria | – | 0.67% | 1 in 149 |
| Apple | – | 0.67% | 1 in 149 |
| Small Healing Potion | – | 0.67% | 1 in 149 |
| Healing Potion | – | 0.67% | 1 in 149 |
| Small Mana Potion | – | 0.67% | 1 in 149 |
| Mana Potion | – | 0.67% | 1 in 149 |
| Ale | – | 0.67% | 1 in 149 |
| Town Portal Scroll | – | 0.67% | 1 in 149 |
| Storm Blitz Helm EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Armor EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Pants EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Gloves EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Boots EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Helm EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Armor EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Pants EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Gloves EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Boots EXC skill | – | 0.44% | 1 in 227 |
| Titan Helm EXC skill | – | 0.44% | 1 in 227 |
| Titan Armor EXC skill | – | 0.44% | 1 in 227 |
| Titan Pants EXC skill | – | 0.44% | 1 in 227 |
| Titan Gloves EXC skill | – | 0.44% | 1 in 227 |
| Titan Boots EXC skill | – | 0.44% | 1 in 227 |
| Brave Helm EXC skill | – | 0.44% | 1 in 227 |
| Brave Armor EXC skill | – | 0.44% | 1 in 227 |
| Brave Pants EXC skill | – | 0.44% | 1 in 227 |
| … and 215 more low-weight entries | |||
Underground Dreadfear — 255 items in bag
| Item | Item level | Share of bag | Odds per drop |
|---|---|---|---|
| Scroll of Evil Spirit | – | 2.27% | 1 in 44 |
| Increase Health Parchment | – | 2.27% | 1 in 44 |
| Magic Arrow Act | – | 2.27% | 1 in 44 |
| Shining Bird Law Book | – | 2.27% | 1 in 44 |
| Marvel Burst Law Book | – | 2.27% | 1 in 44 |
| Orb of Twisting Slash | – | 2.27% | 1 in 44 |
| Spin Step Scroll | – | 2.27% | 1 in 44 |
| Mithril Fragment | – | 1.99% | 1 in 50 |
| Goblin_Treasure_Box_Blue | – | 1.19% | 1 in 84 |
| Mysterious Stone | – | 1.19% | 1 in 84 |
| Golden Sentance EXC skill | – | 0.95% | 1 in 105 |
| Demonic Pants EXC skill | – | 0.81% | 1 in 123 |
| Complex Potion | – | 0.67% | 1 in 149 |
| Imp | – | 0.67% | 1 in 149 |
| Horn of Uniria | – | 0.67% | 1 in 149 |
| Apple | – | 0.67% | 1 in 149 |
| Small Healing Potion | – | 0.67% | 1 in 149 |
| Healing Potion | – | 0.67% | 1 in 149 |
| Small Mana Potion | – | 0.67% | 1 in 149 |
| Mana Potion | – | 0.67% | 1 in 149 |
| Ale | – | 0.67% | 1 in 149 |
| Town Portal Scroll | – | 0.67% | 1 in 149 |
| Storm Blitz Helm EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Armor EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Pants EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Gloves EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Boots EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Helm EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Armor EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Pants EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Gloves EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Boots EXC skill | – | 0.44% | 1 in 227 |
| Titan Helm EXC skill | – | 0.44% | 1 in 227 |
| Titan Armor EXC skill | – | 0.44% | 1 in 227 |
| Titan Pants EXC skill | – | 0.44% | 1 in 227 |
| Titan Gloves EXC skill | – | 0.44% | 1 in 227 |
| Titan Boots EXC skill | – | 0.44% | 1 in 227 |
| Brave Helm EXC skill | – | 0.44% | 1 in 227 |
| Brave Armor EXC skill | – | 0.44% | 1 in 227 |
| Brave Pants EXC skill | – | 0.44% | 1 in 227 |
| … and 215 more low-weight entries | |||
Underground Twin Tail — 255 items in bag
| Item | Item level | Share of bag | Odds per drop |
|---|---|---|---|
| Scroll of Evil Spirit | – | 2.28% | 1 in 44 |
| Increase Health Parchment | – | 2.28% | 1 in 44 |
| Magic Arrow Act | – | 2.28% | 1 in 44 |
| Shining Bird Law Book | – | 2.28% | 1 in 44 |
| Marvel Burst Law Book | – | 2.28% | 1 in 44 |
| Orb of Twisting Slash | – | 2.28% | 1 in 44 |
| Spin Step Scroll | – | 2.28% | 1 in 44 |
| Mithril Fragment | – | 1.99% | 1 in 50 |
| Goblin_Treasure_Box_Blue | – | 1.19% | 1 in 84 |
| Mysterious Stone | – | 1.19% | 1 in 84 |
| Golden Sentance EXC skill | – | 0.95% | 1 in 105 |
| Demonic Pants EXC skill | – | 0.81% | 1 in 123 |
| Complex Potion | – | 0.67% | 1 in 149 |
| Imp | – | 0.67% | 1 in 149 |
| Horn of Uniria | – | 0.67% | 1 in 149 |
| Apple | – | 0.67% | 1 in 149 |
| Small Healing Potion | – | 0.67% | 1 in 149 |
| Healing Potion | – | 0.67% | 1 in 149 |
| Small Mana Potion | – | 0.67% | 1 in 149 |
| Mana Potion | – | 0.67% | 1 in 149 |
| Ale | – | 0.67% | 1 in 149 |
| Town Portal Scroll | – | 0.67% | 1 in 149 |
| Storm Blitz Helm EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Armor EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Pants EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Gloves EXC skill | – | 0.44% | 1 in 227 |
| Storm Blitz Boots EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Helm EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Armor EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Pants EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Gloves EXC skill | – | 0.44% | 1 in 227 |
| Eternal Wing Boots EXC skill | – | 0.44% | 1 in 227 |
| Titan Helm EXC skill | – | 0.44% | 1 in 227 |
| Titan Armor EXC skill | – | 0.44% | 1 in 227 |
| Titan Pants EXC skill | – | 0.44% | 1 in 227 |
| Titan Gloves EXC skill | – | 0.44% | 1 in 227 |
| Titan Boots EXC skill | – | 0.44% | 1 in 227 |
| Brave Helm EXC skill | – | 0.44% | 1 in 227 |
| Brave Armor EXC skill | – | 0.44% | 1 in 227 |
| Brave Pants EXC skill | – | 0.44% | 1 in 227 |
| … and 215 more low-weight entries | |||
Where Each Monster Spawns
Coordinates are the server’s own spawn entries. A range means the monster roams that region rather than standing at a fixed point.
| Monster | Spawn points | Coordinates |
|---|---|---|
| Underground Persona | 86 | 48,40; 46,41; 45,38; 38,68; 38,71; 36,69 +80 more |
| (Elite) Underground Dreadfear | 7 | 18,32; 15,234; 100,17; 97,16; 237,239; 210,8 +1 more |
| (Elite) Underground Persona | 4 | 20,36; 20,235; 99,12; 206,8 |
| (Elite) Underground Twin Tail | 4 | 15,34; 24,234; 229,241; 222,240 |
| Underground Dreadfear | 135 | 24,88; 21,85; 19,90; 19,87; 91,76; 91,73 +129 more |
| Underground Twin Tail | 182 | 57,53; 56,52; 54,52; 55,48; 65,69; 61,69 +176 more |
FAQ
What level should I be for Kanturu Undergrounds?
Monsters here run from level 615 to 620. The warp requires level 1250. The map also carries a level penalty of 1220, below which you take extra damage and earn reduced experience.
How many monsters are on Kanturu Undergrounds?
6 different monster types across 418 spawn points. The most common is Underground Twin Tail.
What is the toughest monster on Kanturu Undergrounds?
(Elite) Underground Dreadfear, with 4,425,000 HP. The hardest hitter is (Elite) Underground Persona at up to 21300 damage per swing.
What is the easiest monster on Kanturu Undergrounds?
Underground Persona at level 615 with 3,951,000 HP and 20000-21150 damage.
How much does it cost to warp to Kanturu Undergrounds?
50,000 zen, and you need to be at least level 1250.
Do monsters on Kanturu Undergrounds have elemental resistance?
No. Every monster on this map has zero ice, poison, lightning and fire resistance, so all elemental damage lands in full.
Continue Reading
| Guide | Why it helps |
|---|---|
| All MU Online maps | Every map with its level range and monsters. |
| Levelling & resets | Where to grind at each level band. |
| All classes | Pick the class that suits this content. |
| All MU Online guides | Every class, season and system guide. |