Jeff has a gray mustache and is slightly bald on the top of his head, with gray hair to the sides and in this back of his head. He has two wrinkles on his forehead and gray eyebrows which match the color of his hair. His age is unknown, but he seems to be in his 50s or 60s. He wears golden glasses, along with a t-shirt consisting of different colors. He wears desert pants with brown shoes. He also wears an ICE vest which displays the word "ICE" and has a golden badge, body-camera, a microphone, and a pistol.
Jeff is seen at the ICE detention center for juveniles who have been separated from their parents for being suspected of living undocumented in the United States. He hands the kids a piece of aluminum that serves as a blanket to sleep with at night.
Later in the episode, Jeff becomes shocked to realize that Kyle was Jewish and wrongly installed in the detention center. This worries Jeff that the public will find the Immigrant and Customs Enforcement (ICE) officers to be racists. Jeff brings Kyle into his office and tells him that he and his family will be brought back home as soon as possible. However, Kyle questions him when the other kids will also be set free. As soon as Jeff didn't give an actual answer, Kyle warns him that someday one of the kids will grow to be a "Mexican Joker" and retaliate against Jeff and the other ICE officers for separating them from their parents and having them live in torturing conditions. This intimidates Jeff and his colleagues into wondering which kid will be the "Mexican Joker".
He later reappears in the episode "Season Finale", where he introduces the Whites to adopt a kid whose parents were recently deported. However, Jeff introduces them as if the kids were dogs, and is revealed to have very poor Spanish skills as he only replies: "Very Good, Thank You and You?" whenever a Spanish native asks him where their parents are.