Serebii isn't the god of news or news validity. They're usually last with news nowadays. Check more sites and you will find news posted before they ever have it. Not bashing them, just saying you shouldn't be so close-minded in who you listen to or who you read. There are other places out there. Anyways, I think these are Rotom forms, at least a few of them. Rotom is made of plasma and plasma seems malleable, so it would make sense that Rotom can shape-shift into different forms. Though many of these look like kitchen appliances. They're just weird.