Evolution of Carl Grimes

Carl Grimes is a kid, all started was when an innocent child who had to kill his mother so that she would not turn into a zombie. 
Have you had a great evolution in the four seasons.

First season:

Second season:

Third season:

Fourth season:

A small gift:

Evolution of Lori Grimes

Lori Grimes wife Rick Grimes  and mother of Carl Grimes and Judith Grimes also one of the main characters of the series 
He died in season three

First season:

Second season:

Third season:

His painful death:

A small gift:

Evolution of Rick Grimes

Rick Grimes one of the main characters has had a huge evolution in the last four seasons:

First season:

Second season:

Third season:

Fourth season:

A small gift: