Here's some sort of an evolution.
This is Osirunet. "She" (neither a boy or a girl, althouh she looks very much likea girl) has one of the lead roles in both Squidology and my other series. The first time I drew her she was mostly based on the guys on the cover of Black Sabbath's Never say die album.
This is from early January 2013.
But then "she" sort of awakens and throws away all the mechanical equipment she thought she needed to survive.
Then she gets colors! And ridiculously long hair.
And some new clothes, and a malevolent mental twin.
The clothes keep on changing a few times. More physical changes is on the way. This is from February 2014
Here's from Al Khemet. In general "her" physical appearance have gotten more realistic, but "her" face remains very simplified.
This is from November 2015
The last project I completed with "her" was "Below". This is from early December 2015.
And this guy haspretty much always been this guy. From the first appearance in a comic in 2012 till now.
This is the last drawing I made of them together. From a meta fiction called I killed Giger.