Design an underground boxing ring or MMA arena with sweating fighters engaged in an intense match. The atmosphere is charged with tension, illuminated by harsh, dramatic lighting casting deep shadows. Around the ring, aggressive pitbulls add to the fierce and raw energy of the scene. The setting is gritty, with a rough, industrial feel, appealing to fight sport enthusiasts and kickboxing fans. The fighters should be muscular, with visible tattoos and scars, showcasing their toughness and determination. The audience is close to the ring, adding to the claustrophobic and intense environment, their faces full of anticipation and excitement.