Americans making up the weird-ass fake name “Waldo” instead of using the real normal name “Wally” that the rest of the world uses is so strange
It's German. The early population of America was heavily German – with no overseas colonies of their own, the German diaspora (starting before German unification, of course) spread through the Americas – the thing about Nazis expatriating to Argentina postwar was that was the most advanced Germanophone community outside the WWII combatants – but a serious ethnosuppressionist campaign around entry to WWI has obscured this ever since.
The US and South America had big expatriate populations from all the Axis countries – remember Japanese internment? Remember when Peru was led by a guy named “Fujimori”? – for the same reason they were all doing imperial expansion, which was that they had pulled themselves together as modern countries too late to claim colonies of their own and so they were experiencing huge population outflows as citizens sought opportunity elsewhere