The Spy Twins are adversaries of Cousin Itt.
Their attempts at espionage are always thwarted by The Addams Family.
They are both tall skinny men with pointy noses. One wears gray pants, black trenchcoat, and a gray fedora with black stripe and has red hair. The other wears black pants, gray trenchcoat, and a black fedora with gray stripe, and has brown hair. However, in "Beware of Thing" they both wore brown fedoras with black bands and gray trench coats. They have a habit of finishing each other's sentences.
On their day off from spying, they tried to break into the Addams' safe, even going so far as to dress up as a giant female hand, but Thing foiled every attempt until they gave up. When Wednesday and Pugsley planned to accompany Secret Agent Double-O Itt on a mission, the Spy Twins tried to capture him. The children and Thing thwarted their attempts, and Itt was able to capture them instead. Later they captured the children to bait Itt, but the kids were able to outwit them, with the help of Snappy the alligator.
The Addams Family (animated 1992) episodes: