This could just be me, but I'm seeing a distinct similarity between those 3. They all quote themselves, continue with obscene unsupported theories, are quite anti women, and come out with such classic things as:

"My atheist friend has aids...think about it".

I may just be a cynic but cross and buddha definately seem to be the same person, high number of posts one after the other on threads, plus they back each other up. Muslim is also displaying similar traits, all 3 also have simple names from similar ideas.