Hi TMB1975, glad you found about the news and are ecstatic about like much of the rest of us. However, I should point out that you're referencing two different characters in your post above. See, they were both "Fat Blue" Anything Muppets or AM's. But they were two different characters.
The one who was mainly in those sketches with Grover, who most refer to as Fat Blue, is actually named Mr. Johnson. He has brown hair and mustache and beardlike sideburns.
The one who opened his mouth and instantly produced sounds of whatever it was he wanted to say was named Simon the Sounds Man. He can be distinguished from Mr. Johnson cause Simon has black hair and mustache and beardlike sideburns.
Hope this helps and have a good weekend.