We're glad you're here! Nicky and Koko are the "Monkeyboys." The name derives from the fact the boys were born in November 1992, the Chinese Year of the Monkey:

"It's easy to be taken in by the Monkey cat's delightful personality, but cats born under this sign can be devious. They are clever at getting themselves out of tight corners and know how to assume an air of innocence. These cats are easily bored, perhaps because they are so intelligent." Zodiac for Cats

The Monkeyboys are also known as "Meezers," a term recognized throughout the world (see link to Siamese Internet Cat Club). Along with all the other Meezers, their intent is to take over our planet.