Elder Grex

Elder Grex
Species	Grex
Category	Theroids
Location	Primordia
Level range	4

The Elder Grex is a boss in Xenoblade Chronicles X.

Stats

Stats

	Min	Max
Level	4	4
HP	1,414	1,414
Melee Atk.	45	45
Ranged Atk.	38	38
Potential	42	42
Evasion	17	17
Melee Acc.	91	91
Ranged Acc.	78	78
EXP	33	33

Attribute resistances

Attribute	Resistance
Physical	​0%
Beam	​0%
Ether	​-25%
Thermal	​-50%
Electric	​0%
Gravity	​0%

Debuff resistances / immunities

Stagger	Vul.	Control	Vul.	Physical Res Down	Vul.
Flinch	Vul.	Taunt	Vul.	Beam Res Down	Vul.
Topple	Vul.	Virus	Vul.	Ether Res Down	Vul.
Launch	Vul.	Blackout	Vul.	Thermal Res Down	Vul.
Knockback	Vul.	Fatigue	Vul.	Electric Res Down	Vul.
Stun	Vul.	Slow Arts	Vul.	Gravity Res Down	Vul.
Bind	Vul.	Blaze	Vul.	Debuff Res Down	Vul.
Sleep	Vul.	Shock	Vul.	HP Recovery Down	Vul.

Shape

Detection

Type	Visual + acoustic
Ground hostility	Hostile
Skell hostility	Hostile
Distance	1000m (visual) 900m (acoustic)
Angle	360°

Appendages

Appendage	Hardness	Skell-tgt.	Exposure cond.
Main body	​0	Yes	—
Head plate	​1	Yes	—
Exposed head	​-2	No	Destroying head plate
Tail	​0	No	—
Appendage diagram

Properties

Type	Boss
Size	Medium
Model scale	150%
Music	z37b20a13t01t08le
Enemy caption	Elma's unit dispatched this creature outside of New LA's West Gate. It had been driven out of its territory after losing a scuffle with another pack.

Arts

Disclaimer: This is the list of arts the enemy can use. The enemy will not necessarily choose to use them.

	Art	Appendages	Cooldown	Attribute	Power	Hits	Range	Debuff	Reaction		Effect
									Foot	Skell
※	Sky Charge	Tail	60.00s	Electric	500	1	Melee, 15m distance, Nearby enemies (15m radius)	—	Launch I	Knockback I	Boosts critical chance by 5.
※	Wind Tackle	Exposed head	20.00s	Physical	200	1	Melee, 25m distance, Single target	—	—	—	—
※	Thunder Spear	Tail	15.00s	Electric	160	1	Melee, 10m distance, Single target	Fatigue I	—	—	—
※	Bite	—	3.00s	Physical	100	1	Melee, 10m distance, Single target	—	—	—	—
※	Roar	—	20.00s	Physical	100	1	Ranged, 15m distance, Nearby enemies (15m radius)	Slow Arts I	—	—	—
※	Guard	—	60.00s	None	0	1	Buff, 300m distance, Single target	Defending I	—	—	—
※	Puke	—	3.00s	Ether	85	1	Ranged, 150m distance, Single target	—	—	—	—
※	Invisibility	Head plate	100.00s	None	0	1	Buff, 300m distance, Single target	Evasion Up I	—	—	—

Auras

Enraged III

HP threshold	25%
Duration	60s
Effects	Boosts melee attack. (40)
	Boosts ranged attack. (40)
	Boosts potential. (60)

Drops

Chest drop rates

Rank	Main body	Appendages
Gold	50.00%	0.00%
Silver	50.00%	0.00%
Bronze	0.00%	0.00%
None	0.00%	100.00%

Material drops

	Main body	Head plate	Exposed head	Tail		Main body					Appendages
						Gold	Silver	Bronze	Total		Gold	Silver	Bronze	Total
(Drops no materials)	╳	╳	╳	╳		0.00%	0.00%	0.00%	0.00%		0.00%	0.00%	0.00%	0.00%

Silver chest
(Main body)

Item	Rate
Random ground armor (pool 1)	100

Gold chest
(Main body)

Item	Rate
Random ground armor (pool 1)	100

In other languages

Language	Name	Meaning
English	Elder Grex	—
Japanese	エルダー・ルプス
French	Grex aîné
German	Alter Grex
Spanish	Grex anciano
Italian	Grex anziano