Last updated: September 14, 2026

MU Online Medusa – Spawn, Drops & How to Kill

On this page: Stats · Where & When · Drops · How to Kill · FAQ

Medusa is the Swamp of Calmness boss and one of the most farmed monsters in MU Online, because her drop pool is small and all end-game: the Divine Archangel and Blessed Divine Archangel weapon series for every class, Crimson Glory, and the full line of class shields from Soul to Darkangel — 35 entries, every one excellent. On this configuration she arrives as a scheduled invasion — the server announces her, she and her assistants hold the map for 15 minutes, and the kill is broadcast with the killer’s name.

Medusa Stats

Level	175
HP	97,800,000
Defense	1,450
Magic defense	1,450
Damage	7,040 – 7,800
Attack rate	5,900
Attack speed / move speed	4900 / 800
Elemental attack	0 – 0
Elemental defense	1,087
Resistances (fire / ice / lightning / poison)	150 / 254 / 150 / 254
Respawn	Scheduled invasion, 15-minute window

Where & When

Rule	Value
Map	Swamp of Calmness
Window	15 minutes, then she despawns with her assistants
Announcements	“Medusa will spawn in N minutes” → “Medusa and her assistants has invaded Swamp of Calmness!!!” → kill notice with player name
Event override	The invasion spawns her with 15,000,000 HP, damage 1,000–1,500 and defense 550 — far below her base stats, so a party can burn her in the window

Medusa Drops

The drop pool on this configuration has 35 entries, every one weighted equally, so the “share” column is the chance that a given drop belongs to that family. Level is the item level range; Excellent means random excellent options are rolled.

Drop family	Items in pool	Level	Type	Share of drops
Class shields Alacran Shield, Ambition Shield, Blue Eye Shield, Constant Shield, Cross Shield, Dark Devil Shield, Darkangel Shield, El Hazard Shield, …	21	+0 to +15	Excellent (luck)	60.0%
Blessed Divine Arch Crossbow, Arch Lance, Arch Mace, Arch Scepter, Arch Staff, Arch Stick, Arch Sword	7	+0 to +15	Excellent (luck)	20.0%
Divine Crossbow of Archangel, Scepter of Archangel, Short Sword of Arch., Staff of Archangel, Stick of the Archangel, Sword of Archangel	6	+0 to +15	Excellent (luck)	17.1%
Crimson Glory	1	+0 to +15	Excellent (luck)	2.9%

How to Kill Medusa

• Only 15 minutes: be on the map before the pre-notice, not after.
• The invasion version has 15M HP, not the 97.8M listed on the monster itself — do not over-prepare, just bring damage.
• She is a poison/lightning caster in the swamp; ice and poison resistance jewels on armour help more than raw defense.

Continue Reading

Guide	Why it helps
All Bosses	Every boss with map, level and drops.
Swamp of Calmness	The map this boss lives on.
Pentagrams & Errtels	Elemental damage is what modern bosses are balanced around.

FAQ

What does Medusa drop in MU Online?
Divine Archangel and Blessed Divine Archangel weapons for every class (sword, scepter, mace, lance, crossbow, staff, stick), Crimson Glory, and 22 class shields from Soul and Silver Heart to Darkangel and Holyangel, all up to +15 with excellent options.

How much HP does Medusa have?
The base monster is level 175 with 97,800,000 HP, but the invasion event spawns her with 15,000,000 HP, damage 1,000 to 1,500 and defense 550.

When does Medusa spawn?
By invasion schedule on the server. The server posts a countdown notice, then she holds Swamp of Calmness for 15 minutes before despawning.