Who are the beasts of the Apocalypse?

It is not reliable to let people tell you what the bible says. Many people will make up stuff because they don't know what it says, and many will make up stuff because they wish it would not say what it says. You just have to read it for yourself.

AFAIK no beasts are mentioned in the Revelation To St. John. But you can easily read it and make up your own mind.