my.metageek.com and inSSIDer are both equipped to display your personal Avatar that you can setup and manage via Gravatar.
It is quick and easy to create an Avatar via Gravatar. Just head over to https://en.gravatar.com/ and setup an Avatar that is associated to the email that you use for your MetaGeek account. Once you have your Gravatar setup, you will see your custom Avatar the next time you launch my.metageek.com and inSSIDer.
By default, if no Gravatar has been setup with your email, you will see a Robot image; like this example:
Setting up Gravatar takes about 3 mins. Though, it may take about 5 - 10 minutes before your Gravatar is fully available to systems that integrate with Gravatar; and then, you will see your new Gravatar show up in my.metageek.com and inSSIDer: