Make this colossal humanoid militar...

Make this colossal humanoid military mech with a strong, balanced build and a confident upright stance. Focus on thick armored plating in dark steel gray with subtle red accents, layered across the chest, shoulders, and legs for a powerful frontline look. Include exposed hydraulic pistons at elbows, knees, and shoulders for mechanical realism. Build a sleek armored helmet with a glowing horizontal visor and reinforced shoulder armor. Add large forearm gauntlets with integrated cannons, back-mounted stabilizer thrusters, and small shoulder missile pods. Highlight small indicator lights along joints and the chest reactor.