Ma Kai was a thin man in his late thirties, without a particularly strong build. His most distinctive feature was a triangular face, giving the impression at first glance that he was rather sly and cunning!
In fact, Ma Kai was Su Zhengxiong's right-hand man, along with Niu Li, they were known as the "bull head and horse face" beside Su, the King of Hell.
Niu Li was that powerful man who, in a showdown at the Tengwang Pavilion Grand Hotel, had broken three of Jiang Tao's ribs despite being left with only half a life himself. Being able to put Jiang Tao in hospital reflected his formidable strength.
If Niu Li was regarded as Su Zhengxiong's top fighter, then Ma Kai, standing before them, was Su Zhengxiong's top strategic advisor. When Su Zhengxiong fled from the magic capital, Ma Kai was the one who benefitted the most.