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Chrono Wiki

Tera Mutant (Terra Mutant in the SNES/PS localization) is a boss fought at the Black Omen in Chrono Trigger. It consists of two different parts, its Upper Body and its Lower Body.

Even if the player revisits the Black Omen in an earlier time period, Tera Mutant won't be available for a second fight.




The Upper Body periodically absorbs around 1,000 HP from the Lower Body, which takes next to no damage from all physical attacks, and absorbs all magical attacks. The Upper Body itself is not very threatening as long as the party is wearing protection against Confusion. The Upper Body takes next to nothing from basic attacks, and basic attack techs, but elemental attack techs, such as Crono and Frog's double tech Lightning Rod, will do effective damage to the Upper Body. Magical attacks are also effective. If the Lower Body dies, it will cast Halation which sets HP to 1 for all party members.

The Lower Body will be destroyed if the Upper Body is destroyed. The Lower Body itself is nearly invulnerable, taking little damage from physical attacks, and counters them with Life Shaver. It absorbs all magical attacks. The only reason to target the lower body is to Charm it with Ayla.

Name Etymology[]

In the SNES version, the name of the monster was "TerraMutant"; Terra being the Latin word for the planet Earth.  However, the name translates from the original Japanese to "Tera Mutant", and is named as such in the more accurate DS script.  Tera is a prefix used in the metric system which denotes 1012, or 1,000,000,000,000 (one trillion).  Appropriately, this enemy is fought after the Giga Mutant is destroyed (giga, meaning 109, or one billion, comes before tera).


Bestiary entries (DS)[]

Chrono Trigger Bosses
Prehistory Nizbel · Nizbel II · Azala · Black Tyranno
Antiquity Golem · Mud Imp · Red Mudbeast · Blue Mudbeast · Giga Gaia · Dalton · Lavos · Golem Overlord · King Dalton
Middle Ages Yakra · Ozzie · Zombor · Masa & Mune · Flea? · Flea · Slash (Unarmed, Sword) · Magus · Melphyx (Core, Upper Body, Lower Body) · Diva Flea · Super Slash · Ozzie the Great · Rust Tyranno
Present Dragon Tank · Heckran · Yakra XIII
Future Guardian (Pod) · Krawlie · R-Series · Lavos Spawn · Mother Brain · Son of the Sun
Apocalypse Lavos
Black Omen Mega Mutant · Giga Mutant · Tera Mutant · Elder Lavos Spawn · Queen Zeal · Mammon Machine
Bosses in the DS Goldhammer · Nu Guardian · Nu Master · Archaeofang (Elder) · Archaeofang (Younger) · Master-at-Arms · Bladesman · Once-King Dalton · Steel Shade · Alabaster Shade · Crimson Shade · Eggsterminator · Dream Devourer