How to remove custom Alexa toolbar from Chrome extension completely

I created a custom free Alexa toolbar and installed it as an extension on my Chrome.

So whenever I open my chrome, the custom alexa extension appears as another menu on chrome. However, the extension apparently makes my browser test automation to fail.
I remove the extension manually from the chrome setting. I thought the extension is removed completely.

However, it turns out that Alexa still saves the extension on your hardisk. Whenever, my test automation runs, it loads up the extension to chrome again. I tried to remove it again, but it always appears. This is very annoying.

To find the location of the Alexa chrome extension just open regedit and search for "Alexa" and remove any of alexa information.

For me the culprit is stored in "C:\Users\<username>\AppData\Local\Alexa\atbpg-MSXGM-1.2.crx". And this file will be loaded by chrome automatically.

I deleted the file and the Alexa chrome extension never comes up again.