Cyberon battle-cruiser

Cyberon battle-cruisers were large spacecrafts used by the Cyberons in their surprise attack on Earth which started the Cyberon War. Each battle-cruiser was led by a Cyberon Cyberleader, with one landing in each of Earth's major cities, including London and New York City. They had highly effective cloaking systems, such that Earth had no inkling that they even existed until they landed. (COMIC: Before the Storm)