Dark Chao (Sonic X)

The Dark Chao is a creature that appear in the Sonic X comic series published by Archie Comics. It is an artificially-created Chao breed cultivated by Dr. Eggman for one of his schemes to take over Earth.

Anatomy
In their default state, the Dark Chao look identical to regular Chao. When switching to their Dark Chao state however, their skin turns black, their yellow tippings becomes red, and their eyes becomes white with blue sclera. They also grow sharp teeth, their round tails turn into red-tipped devil tails, their wings become bat-like, they gain a red crescent symbol on their chest, and their floating dot becomes spiky.

Characteristics and culture
In their default state, the Dark Chao initially exhibited the cute, cuddling and pleasant mannerisms of regular Chao. Over time however, they grew increasingly more moody, showcasing confusion, restless and aggressive behavior. Being created from Cheese's DNA, they referred to it as their parent and displayed dedication to Dr. Eggman's plan.

In their Dark Chao state, the Dark Chao turn into destructive forces of nature. Extremely aggressive, wild and ravenous, their only interest becomes causing as much destruction and torment as possible, and will attack anyone and anything in sight, all while showing a mischievous, if not malicious glee over the mayhem they cause.

Like regular Chao, Dark Chao can only speak one word which comprises an entire language. Instead of saying "Chao" however, they say "Choa". Also, to those that understand Chao speech, it is like the Dark Chao speak a different language and have really bad accents.

Powers and abilities
As a swarm, the Dark Chao are an incredibly destructive force; Tikal herself implied that, if left unchecked, the Dark Chao could have destroyed the entire Earth.

Dark Chao has incredible strength for their size: a single Dark Chao could easily swing a whole couch around and two of them could uproot a fire hydrant. They likewise have a powerful bite that let them easily crew through even metal. Like regular Chao, they are also capable of flight.