Have you met the Human Mamba?
I guess not!
He is my proposed character for the 
O well, He wears a headgear with the shape of the Black Mamba's head. So, with this, you won’t get to see his bear-shaped head (not you 
But his unkempt dreadlocks will be easy to notice.
He is fond of animals. So, he will have a special attachment to the K-nine, and possibly, he will have the ability to bring in reptiles to the game (especially in the arena like Jurassic park).
He prefers long-ranged weapons that can cause maximum destruction, damage and fatality to his enemies. He can deliver series of shots in rapid succession, but using this special skill will make him lose energy quickly.
From the thick Mogazari Forest of the Eastern region, a young boy grew up guarding the ruins of his small village. A village once known for its
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liveliness, for its busyness, for its rich display of culture and for its ever-joyous and social people. But the smiles on the faces of the young and the old ceased when the rumbling from above the clouds disrupted one of their biggest festivals.
The confusion on the faces of the villagers were so evident that they were not prepared for the impending doom. In a few moment later, the music stopped, laughter ceased and the environment changed. The invasion of the Big Mechs and Robots led to a grand-scale massacre. These Big Mechs and Robots were being controlled by Rogues who wish to dominate the world and get on top of the biggest Metropolis, Zeelis. The remnant of the world found themselves in the Metropolis, Zeelis, which was once a centre of commerce and tourism.
Young Melzrach who left the festival to play with the animals in the forest prior to the invasion and massacre escaped the doom that befell his family, friends and relatives. He spent his childhood and youthful age in utter loneliness, sheer bitterness, complete anguish and perfect agony. The animals in the forest became his friends and family. The Black Mamba became his best friend and from this deadly animal, Melzrach began to form himself in its likeness.
He spent his time in the forest communicating with animals and preparing himself to face his greatest foes (the rebels and their techs).
His hatred for AI (techs and robots) is boundless; he does not bother to distinguish between the good ones, neutral ones and those controlled by Rogues and Outlaws. He is bent on unleashing vengeance on all of them.
He joined the league of resistance, but he has little trust for humans and he is not much of a team player. However, his sole mission is to unleash vengeance on all those responsible for the chaos in his home town and in the world.
He took the nickname “Mamba” from the deadly reptile, Black Mamba. This is the second-longest venomous snake after the King Cobra. It is capable of striking at a considerable range and may deliver a series of bites in rapid succession.
He took his nickname from this animal, and decided to shape his destructive life like this deadly reptile.
It was quite fun writing this piece. Although I had a great graphics difficulty. If only I could draw, at least you all will get a better picture of this character 😉
But all the same, it was fun writing and I appreciate 
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@psyberx brand.