Steve has also been shown to occasionally struggle with both substance abuse and an addiction to power.
In An Apocalypse to Remember, Steve claims to be hooked on "hallucinogenic berries", which ultimately turn out to be poisonous.
Stan sometimes attempts to change Steve, usually unsuccessfully, as when he once gave Steve an experimental performance enhancer.
The steroid caused Steve to grow female breasts but also ironically made him more popular at school.
Despite his wimpy and nerdy characteristics, Steve is particularly conceited and obnoxious.
Although normally even-tempered and relatively tolerant, Steve cries when he is notably upset, but he has also had uncontrolled bursts of rage, during which he breaks nearby objects and screams very loudly.They even made a fake detective agency where they even came up with their own nicknames. Steve's original design was much geekier and gawky and he was voiced by Ricky Blitt.Halfway through production, Grimes replaced Blitt and Steve's design was made to be more attractive, so he would be less comparable to Neil Goldman from Family Guy.They have also tried to teach both of their parents individual lessons, like when they tried to teach Francine not to be racist, only to learn that she was actually prejudiced against left-handed people, Steve's tendency to inflate his own ego, combined with Roger's easily irritated and vindictive nature, often leads the latter to physically abuse or play a prank on Steve because of a real or perceived slight or insult.Occasionally, Steve gets even, like when he once conned Roger out of ,000.the two once even having shared in a kiss together (in the episode "License to Till"); Toshi, who is an Asian American and only speaks Japanese; and Barry, who is morbidly obese with an inarticulate, strident, and sloppy vocal quality.