Steve was a covert member of the Scamper Squad who also fostered a side alliance called Rockstars with Johnny Mac. He had a complicated relationship with Vanessa Rousso throughout the game which was what brought him into Scamper Squad. For a majority of the game he was seen as a follower of her's but secretly he yearned to turn against her. He knew he couldn't do that till he broke up Austwins the core of Scamper Squad and went after them when he won HOH after all the alliances that didn't include him had been eliminated from the game. He was denied an opportunity to target Vanessa next when she won the F4 veto. He managed to however win the Final HOH and evict Vanessa. After making it to the final two he was accused by the jury for being a floater and only listening to Vanessa. However, he argued that he made his own moves, and he was able to list all of the moves he "made." This along with him being the only person to evict Vanessa enabled him to win.
His love for his 'mommy' and the running joke (from the Austwins and Vanessa) that he is 'sneaky' are also major parts of his storyline. He is known to feeders for pacing by himself for hours at night after everyone has gone to sleep. Steve was also known to be the "socially awkward dude."