Antique-collecting extraterrestrial yuppies

Two antique-collecting extraterrestrial yuppies appear in the 1987-1996 series episode The Ninja Sword of Nowhere. They ride in a spacecraft travelling through the interdimensional void, and when landing at a landfill on Earth, they first mistake the entire planet for being one. With telekentic abilities, they can float when on Earth.

They try to take the Ninja Sword of Nowhere, but are first interfered but the turtles. At the end, they managed to take the sword with them, leaving Earth from behind.