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Mysterious Telethia Wiki-wordmark
Telethia 3          
Area(s) Makna Forest (Lakeside)  
Type Telethia Level(s) 80  
Respawn No Movement Type Ground  
Detection Type Sight Kindred No  
View Angle 120° View Distance 27 M  
EXP 35,393 AP 1,020  
Spawn Time Only during Melancholy Tyrea  

The Mysterious Telethia (Japanese: 謎のテレシア, Nazo no Tereshia) is a quest exclusive boss in Xenoblade Chronicles. It is a Gigas-type member of the Telethia family, and appears at level 80 near the Lakeside in Makna Forest during the Melancholy Tyrea Surprise Quest. It must be defeated to complete the Melancholy Tyrea surprise quest. Although the Mysterious Telethia drops no treasure (like any bosses), it does carry crystals, which can be obtained by using Riki's Yoink! ability. At the end of the battle, it is revealed to be Yumea.


HP Strength Ether Agility Double Attack Rate Critical Hit Rate Physical Defence % Ether Defence % Defence Direction
506,400 1,635 1,303 131 0 0 0 0 N/A


Art Attribute Multiplier Hits Range Effect Knockback Blowdown/Daze
Super Nova VIITalent (Ether)1.0 – 1.254Frontal ArcBind--
Ultimate Cannon IXTalent (Ether)3.0 – 3.21Frontal Line-Yes (1)-
Soul ReadStatus--SelfPhysical Evasion Up--
Talent AbsorbStatus--SingleTalent Absorb--
Sleep SpinPhysical2.3 – 2.51Frontal ArcSleep--
Sleep BulletEther2.05 – 2.251SingleSleep--


Break Lock-On Physical Defence ▼ Agility ▼
Topple Bind Ether Defence ▼ Aura Seal
Daze Paralysis Attack Power ▼ Arts Seal
Sleep Slow × Ether Power ▼ Death ×

△ = 70% resistance
▲ = 100% resistance unless certain conditions are met
◇ = 70% resistance, but no resistance during chain attack
◆ = 100% resistance, but no resistance during chain attack
○ = no resistance
× = immune

Stealable items

Rare Telethia Crystal (V) First Attack Plus V / Auto-Heal Up V 0%
First Attack Plus V / Topple Resist V 0%


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