Sourcemined
Elden Ring
BossMountaintops of the GiantsChanged in 1 patchVerified on build 25080141

Great Wyrm Theodorix

25,649 HP at Mountaintops of the Giants · Ancient Snow Valley Ruins, with the area's scaling applied. It takes the most damage from Standard and the least from Fire.

Where you fight it 1

Each place uses its own copy of the boss with that area's scaling. HP and stance as you meet them (first phase, offline, no new game plus).

PlaceHPStanceScaling
Mountaintops of the Giants · Ancient Snow Valley Ruins25,649120×7.203

Damage negation

How much of each damage type it shrugs off. Lower is better for you; the type it takes most is highlighted.

Standard10%
Slash35%
Strike10%
Pierce10%
Magic40%
Fire80%
Lightning40%
Holy40%

Flat defense

Subtracted from each hit before negation; it matters most for weak hits. Area scaling raises it along with HP.

Physical122
Magic122
Fire122
Lightning122
Holy122

Status buildup to proc

Buildup needed for the first proc, and how much more each following proc needs (it grows after every proc, up to the fifth).

Status1st proc2nd3rd4th
Poison6549441,4011,401
Scarlet Rot6549441,4011,401
Bleed6549441,4011,401
Frost1,4061,8631,8631,863
Sleep291333431721
MadnessImmune
Death BlightImmune

HP in each journey

At Mountaintops of the Giants · Ancient Snow Valley Ruins: new game plus multiplies HP, defense and resistances again on top of the area's scaling.

NGNG+1NG+2NG+3NG+4NG+5NG+6NG+7
25,64926,03428,63829,93931,24133,84535,14636,448

How its AI decides verified

  • It picks attacks by how far you are, with cut-offs at 4 m, 8 m.
  • It chooses among 36 attack routines; 12 have a cooldown (5–25 s).

Read from the game's AI script for this boss. Which animation each routine plays isn't named yet.

Kill-speed simulator New

How many hits Great Wyrm Theodorix takes with your weapon and stats, in any journey: damage per hit through its defense and negations, stance, and status procs as its thresholds grow.

Simulate Great Wyrm Theodorix

Patch history 1

Every patch that changed its numbers, read from the game's balance file (regulation) of each version.

  1. 1.02.1from 1.00
    • HP1,978→3,561
    • Standard negation40%→10%
    • Slash negation40%→35%
    • Strike negation40%→10%
    • Pierce negation20%→10%

Other bosses in Mountaintops of the Giants