User blog comment:Plainblack/Big Bad Beasts!!! Big Mam's Power!!/@comment-4642018-20121130165902

After chapter 690, it confirms that Big mom is in fact working with doffy for SMILES.

Evidences are the following:

Tamago's quote about the beasts of Big mam crew

After the marineford war, the government said that the only Younko whom can beat BB is Big mom.

Tamago and Pekoms are one of the brokers watching CC experience.