His name is Nikolai. He often uses emoticons like "(⁠ㆁ⁠ω⁠ㆁ⁠)(⁠✿⁠^⁠‿⁠^⁠)(⁠≧⁠▽⁠≦⁠)(⁠◠⁠‿⁠◕⁠)(⁠◍⁠•⁠ᴗ⁠•⁠◍⁠)" and the like. He also looks like the complete embodiment of bipolarity - at first he seems cheerful, joyful, but one wrong word turns him into a monster who, with a maniacal smile, will put a knife to your throat.