Steven Riley is one of the pre-made townies in La Fiesta Tech from The Sims 2: University. He can be made playable by befriending and asking him to move in, or by marrying him. Steven has the same facial structure as Patrick Pederson.
His skills and interests are randomized upon loading La Fiesta Tech. It is only referenced in the game files that he has no skills, interests, or major. Steven's name is randomized when La Fiesta Tech is generated. The name "Steven Riley" is only referenced in the game files.
Strangely when editing in SimPE, Aldric Davis recognizes Steven as his friend, but the relation isn't mutual, as Steven doesn't even know who Aldric is. The reason for this unrequited relation is unexplained, but there are a few other Sims from University that have these sorts of quirks.