Treedon

Treedons are enormous green bird-like creatures found on Fake Namek. Their most remarkable trait is their ability to appear indistinguishable from dense evergreen trees when stationary. Their bodies serve as convincing forest canopy, complete with branches that can be snapped off without immediately revealing the deception.

Their name is a combination of "tree" and "Troodon," blending the plant kingdom with a predatory dinosaur. This fits their nature perfectly: they look like vegetation but behave like predators, pecking hungrily at anything small enough to register as prey.

During the Fake Namek filler arc, Zaacro led Gohan, Krillin, and Bulma into what appeared to be a dense evergreen forest while searching for a Dragon Ball. When Krillin pulled a branch from a nearby tree to make a torch, a frightening sound erupted around them.

The group quickly discovered they were not standing in a forest at all but on the back of a Treedon, which suddenly launched into flight. The massive bird carried them toward a mountain and a great castle. Other Treedons spotted the hitchhikers and began pecking at them aggressively, forcing the group to leap from the bird and freefall toward the castle below.

The entire encounter was ultimately revealed to be an illusion. The Treedons, along with everything else on Fake Namek, never truly existed. They were part of an elaborate deception designed to trick the Z Fighters.

Despite being fictional within the fiction, the Treedons remain one of the more creative creature designs from Dragon Ball's filler content. The concept of an entire forest being composed of living, flying predators plays on the kind of environmental deception that makes alien worlds feel genuinely dangerous.

Their existence raises an interesting question about Fake Namek's illusions: were the Treedons based on real creatures from some other planet, or were they entirely fabricated? The series never answers this, leaving the tree-birds as a memorable one-off species from an arc designed to buy time before the real Namek saga could begin.