Osiris

"You see! You and me, we're not so different, are we?"

- A developed Osiris speaking to someone unknown An Osiris is a type of Grimm made by Devan4590

Appearance
An Osiris' appearance is determined based off any human or grimm that touched a grimm summoning pool with a significant portion of their body. The Osiris will originally start out as a humanoid blob, but as it forms its figure will be more defined, into a replica of the human/faunus that it is copying.

Osiri don't exhibit any other colors apart from natural grimm colors. The parts that mimic articles of clothing, their bodies are black, but occasionally with red markings to mimic any markings from the person they're mimicking. However, areas that mimic skin and hair are white. Their eyes are mostly black, except for red irises. Most of the time, Osiri have visible legs if the person it was copying was wearing something that allowed for it. However, this won't be present if the person it was copying was wearing something that hid their legs.

When they are young, they appear to have poor posture and are often hunched over or appear to have some other chiropractic posture-related issue. However, this changes over time, as they get older, their posture will improve allowing them to stand up straight or sit straight.

Behavior
All of them share one trait, they mimic negative aspects of whomever they are mimicking. These will often appear to present themselves in a worse manner, but this is false because in humans and faunus there are positive aspects to balance it out. However, in an Osiris none of those aspects are present.

Young
A young Osiris is rarely seen, but use instincts to hide or kill when it can. They don't show much communication skill because the only thing they start out being able to say is "See me". In addition, they are able to take down easier prey like smaller children or non-experienced fighters, but don't stand much chance against experienced fighters.

Adult
An adult Osiris is very rare, to the point of not having a genuine recorded instance. However, they appear to be able to use a wide array of words that anyone, except animals, will understand. They also appear to be skilled fighters, often causing significant damage to experienced fighters.

Abilities

 * Human-like movement: Human like movement will allow it to move and seem like a human, allowing it to seem like less of a threat when not seen clearly.
 * Speech: A developed Osiris can speak like a human, and this is often used to instill fear and mystery, allowing it to lure more Grimm towards its prey.
 * Command: Osiri exhibit much higher levels of authority when it comes to commanding Grimm, which works to its favor.
 * Physical prowess: An Osiris will exhibit strength depending on its age. Normally, it's not that strong. But adult ones have enough strength to fight a regular huntsman

Graves
When Mossy Graves fell into a grimm pool, an Osiris was able to form from him. It appeared to have been developing in the shadows of Beacon, and was starting to improve upon the tactics used by Grimm. However, eventually a huntsman was able to snipe it whilst on Beacon tower.

Salem
Salem was able to remain hidden for an unknown amount of time, and grew ever more powerful by her development. This allowed her to master control over more Grimm, even for a while two Osiri were at her command before they were ultimately killed.

Trivia

 * The Osiris was Devan4590's interpretation on what Salem might be.
 * The Osiris also is a reference to the Zenonia Series' Osiris, which is the embodiment of the evil in the hero Regret.
 * This was also inspiration for how Osiri take negative aspects from the base.
 * Osiri are unranked because they haven't been seen or fought enough times to get a rank.