For a Character Design Challenge:
Theme: POST-APOCALYPTIC AI CHILDREN
Far into the future, where humanity is long extinct due to a catastrophic event, AI robot children have survived and now live in scattered colonies across the continent. They were programmed to be the companions for mankind's children. After years of expired programming and bad bugs, some of the children formed gangs across the desert for survival; however, constant rivalry rages between the different age groups.
This chap belonged to a series of child bots that were designed to cater to a child's emotional needs through companionship, so he was made to look like cute. Although a fierce warrior and an oil scavenger of the wasteland, he realized that his cute face doesn't really contribute to his demeanor, so he painted a pair of eyebrows on his goggles to always look like he has a bone (or bolt) to pick with someone.