From Wikipedia:

Mr. Blobby is a character originally featured on the British Saturday night variety show Noel’s House Party, broadcast on BBC One. Created by Charlie Adams, a writer for the show, Mr. Blobby is a bulbous pink figure covered in yellow spots, with a permanent toothy grin and green jiggling eyes. Mr. Blobby communicates only by saying the word “blobby” in an electronically altered voice, expressing his moods through tone of voice and repetition. He topped the UK Singles Chart with the 1993 Christmas release “Mr. Blobby”.