Blob is a character in Kirby's Dream Land 2. She replaces the character Chao in the non-Japanese versions of the game. Similiar to Gooey, once Kirby defeats a mid-boss with the animal on one of the sacks throughout the game, Blob would appear and give Kirby a 1-UP.
Blob is a creature composed of Dark Matter wearing a ribbon. It was rumored Gooey was her older brother. Blob's appearance also resembles Chuchu because of their pink color and ribbon. The don't have any other connection.