Kaiman

Kaiman is the main character of the manga and anime series Dorohedoro. He is born in the Hole with an immunity towards magic. Kaiman has made it explicitly clear that "Kaiman" was not his actual name, but it was given to him by his best friend, Nikaido, after he began suffering from amnesia. Kaiman's lizard head being the result of a Magic User's curse, his main goal is to seek out the one who cursed him in order to change him back. But, because Kaiman can't remember who cursed him, due to his amnesia, so he resorts to clamping his mouth around the head of every Magic User he comes across. 
He is voiced by Wataru Takagi in the Japanese dub and by Aleks Le in the English version of the anime. 
==Appearance==
Throughout most of the series, Kaiman takes on the appearance of a lizard-like creature.
Although he retains his human body, his face and head have changed dramatically due to the effects of a Magic User. Kaiman most closely resembles a Paraguayan Caiman Lizard, his hair replaced by long and sharp spikes. He sports small crosses over his eyes and wears gas masks most of the time, though he refrains from wearing them later on in the series. His design somewhat changes throughout the early chapters of the manga. In the very beginning, Kaiman has a relatively lanky frame, long limbs, an elongated muzzle, and long spikes on the back of his head. In later chapters, he becomes much more muscular, broad-shouldered, and burly, with a weightlifter-like physique; his head becomes shorter and snub-nosed, with much shorter spikes, more reminiscent of a head of a lizard. His anime design immediately follows the "burlier" version since Episode 1. It appears that despite having his head chopped off, he can regenerate it within a few days.
==Personality==
Unlike his best friend Nikaido, Kaiman is usually arrogant and lazy. However, he's rather kind and cares a lot for his best friend, Nikaido. Even though at times, he can be rude, stubborn, and prone to resolve anything with violence. But deep down, he only wishes to have his normal head back, eat gyoza, and have more money, in that specific order. And he shows no regard or concern about anything else, except for his best friend Nikaido. Kaiman sees Magic Users as scum, killing them on the spot after interrogating them, and showing no remorse afterward. He hates them, and even would start a mass slaughter in the middle of their realm to find the one responsible for his head. Kaiman has constant nightmares about his creation and death, causing Kaiman to wake up tired, worried, scared, and trying to forget them. Even if sometimes they have a connection to his past. Kaiman has shown to be a bit absent-minded as during both his jobs he finds himself easily distracted by things.
== Trivia== 
*In Dorohedoro, it is shown that Kaiman is actually a split personality of Ai Coleman
*In a twisted way, Kaiman, even amnesic, kept doing his previous work, like The Boss, by killing Magic Users indiscriminately, maintaining traits from both, Kaiman and Kai's personalities.
*Kaiman's head design in chapter 1 is strongly reminiscent of a caiman head, this design was altered almost immediately in future chapters, giving him a more lizard-like head, with a short snout and more human eyes. His body was also altered, from a slim figure to a bulky and heavy muscle appearance.
* It was revealed in an interview by Q Hayashida in 2006. She tends to start every chapter of the manga when Kaiman is present to draw him in his true form, overdrawing his head later reference.
*For some unexplained reason after Ai left the second Kaiman body the Crosses in his eyes disappeared.
*Kaiman can shed, at least from his lizard head.
*Kaiman is comparatively more violent than Aikawa, his other persona. As Aikawa, he was much calmer, evidently more levelheaded, and would usually avoid fights unless necessary. Kaiman, on the other hand, is more prone to getting into conflict and doesn't stray from killing people, even when the situation does not call for it.
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