Malewarebytes exe part of Norton?

I have a vista home premium OS with the Vista Service pack 2  I currently have Norton Antivirus 

 

My Question: Is there any reason for me to have an exe program from Malewarebytes as part of my Norton product or any Norton updates, anti-virus updates, anti-spyware updates, etc?

What I mean is that at no time has Norton ever installed any type of exe file that woudl be part of malewarebytes, right?