Jake morphing into an unusable morph, the jaguar.

"Then you undid the time line, so none of it ever really happened. You would find you cannot morph the jaguar or the monkey, because you never really acquired those animals."
Ax to Jake[src]

Unusable Morphs, also known as Non-Usable Morphs, are morphs that, despite being acquired and morphed by morph-capable individuals, cannot be morphed into again due to varying circumstances.


"I tried morphing the Tyrannosaurus. Nothing. Didn't work."
"You could ask Ax. He may know why."
"Yeah, but even if he explains it, I still won't understand it."
Jake and Cassie[src]

The two main reasons for a morph being rendered unusable is either the morpher becoming a nothlit (trapped in one morph), thus leaving him or her unable to morph out, or because the individual acquired the morph in a Sario Rip. A Sario Rip is a rift in the fabric of space-time, caused by a massive, precise explosion. It can send those in the vicinity of the explosion either forward or backwards through time. If a person manages to escape the effects of the Sario Rip and prevent the existence of the timeline in which the morphs were acquired, they would lose their ability to morph into those animals.

There are also other possible reasons: those suffering from a hereth illint, an allergic reaction to an animal's DNA, would expel said DNA, rendering the morph unusable. In a rare instance, one could also acquire and morph a creature that goes through natural morphing (such as a caterpillar morphing into a butterfly), thereby rendering both forms unusable.


Morphable character Morph

Spider Monkey (Male), Jaguar, Leeran, Tyrannosaurus Rex, Warhorse

Rachel Spider Monkey (Male), Jaguar, Crocodile, Deinonychus, Crayak's Monsters
Tobias Cat (Dude), Deinonychus
Cassie Spider Monkey (Male), Jaguar, Leeran, Tyrannosaurus Rex, Caterpillar/Butterfly
Marco Spider Monkey (Male), Jaguar, LeeranTyrannosaurus Rex, Grizzly Bear
Ax Spider Monkey (female), Jaguar, Leeran, Tyrannosaurus Rex
Esplin 9466 Amazonian Snake, any morphs acquired through host body Alloran-Semitur-Corrass
David Golden Eagle, Cockroach, Flea, Lion, Seagull, Human (adult male Controller), Human (Saddler), Human (Marco), Rattlesnake, White Rat
Arbron Kafit bird, Djabala
Elfangor-Sirinial-Shamtul Kafit bird, Djabala, Taxxon, Human