Combine the best features of all three references into a skull robot tank with 4 distinct arms, each hand holding a different weapon: industrial blade, blaster, syringe, and claw. Incorporate the wild, detailed mechanical complexity and low, forward skull face from the first image, the shiny silver-grey metal and compact proportions from the second, and the dark, almost black inner cables and menacing vibe from the third. Render in retro stickers style with a clean outline and transparent background.emoji