These are Carl and Lenny The Cats. Carl The Cat is the grey one. I got them when they were 6 weeks old. Believe it or not they are from the same litter. Carl was the only grey one and resembled the Russian blue that lived across the street, so it is assumed that Carl and Lenny are actually half-brothers.
We've been having some issues with how pictures appear on the forum, but I've edited your post and your pictures should be visible now.