Certainly a Haworthia, looks like H. cooperi.

Agree with Kara on the ID. Usually Altman's and Costa Farms often glue on those horrible fake flowers. Kara is right. You can remove with tweezers and some patience. I also have a "brain cactus" (Mammillaria Elongata cristata) that came with plastic flowers, and it actually grew so much that it "forced" the plastic flowers off. So -- if you don't have luck TAKING them off, grow your plant and let the plant do the work. ;-) You have a very pretty Fairy Castles.

Acanthocereus tetragonus ‘Fairy Castles’ maybe? if so, it's a diminutive form of Acanthocereus tetragonus. I've read it's very unlikely for this form to bloom.

Maybe Ferocactus emoryi or covillei