Blizzard Downloader.exe is part of a product called known as Blizzard Downloader and the developer is Blizzard Entertainment .
If you think that this file contains a virus or another malware, please download a virus scanner.
If Blizzard Downloader.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select Blizzard Downloader from the list to remove the process Blizzard Downloader.exe from your computer.
If you have any problems with Blizzard Downloader.exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting Blizzard Entertainment, the developer of Blizzard Downloader.exe and ask for more information.