Sergio is a staff in the restaurant at Garfield Price Building. Lincoln brought a jacket from him in order to get into the restaurant. Later, when he met Susan B. Anthony, she identified Lincoln as "Sergio", as written on the name tag. (Orientación)
When Lincoln Burrows needed a jacket for the Garfield Price Building, he asked Sergio to get his jacket. The people looked strange when Lincoln came with a jacket named "Sergio". Gretchen made a joke about it.
- Orientación (First appearance)