The search results for "mlg.exe download" reveal three primary and very different possibilities for what this file could be. Depending on what you are looking for, it may be a joke program, a piece of industrial software, or a potential security risk. 1. The "MLG Antivirus" Joke Program
If you didn’t intentionally install a known MLG-related app and the file is causing issues (pop-ups, high CPU usage, or browser redirects), remove it: mlg.exe download