Batman sitting by the water labeled as "Cu" (copper) is the perfect punchline to those displacement reactions. No matter which metal tries to show off—iron, zinc, or magnesium—copper gets kicked out of its sulfate compound and just chills. It's basically chemistry's way of saying "I'm Batman" after every reaction. The more reactive metals do all the work displacing copper, and there it sits, unbothered with a drink, watching the chemical chaos it left behind. Just another day in the reactivity series hierarchy.