Make this colossal humanoid mech wi...

Make this colossal humanoid mech with 4 extra arms, armored in gunmetal gray with deep cobalt accents. Include fully articulated main and extra arms, exposed hydraulics at joints, back boosters, and shoulder missile pods. Arms end in energy cannons, blades, and grappling claws. Action pose: leaping forward, main arms firing, extra arms slashing or grappling, legs bent mid-air, visor glowing aggressively. Highlight subtle neon glows along hydraulics and reactor, modular weapons, and dynamic motion. Make the background plain black to emphasize silhouette and energy effects.