The Americans · A Viewer's Companion
Nobody on The Americans is only one person. Philip and Elizabeth Jennings are Soviet illegals whose marriage was an assignment and whose children were part of the cover; Philip keeps a second wife under a second name, and a son in another country. This chart separates the three sides — beige is the cover the KGB built, red is the Centre and its people, grey-blue is America: the Bureau and the neighbours.
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Almost nobody here has one name, one job or one family. These five things explain most of the confusion.
Philip and Elizabeth Jennings are KGB Directorate S illegals: deep-cover officers given American names, American accents and each other. They met when the Centre paired them, moved to Northern Virginia, opened a travel agency and had two children — because a couple with kids draws no attention. He was born Mikhail Petrov in Tobolsk in 1942; she was born Nadezhda Popova. Everything else on their side of the chart is scaffolding.
The show runs two separate Soviet casts and never labels them for you. The illegals — the Jennings, and others like them — live as Americans with no diplomatic cover; if they are caught, nobody comes for them. The Rezidentura is the legal side: Arkady, Oleg and Nina are officers working out of the Soviet embassy under their own names. The two halves almost never meet, which is the point.
The Jennings never report to the Rezidentura — they report to a handler who reports to the Centre in Moscow. Claudia has the job first, loses it, and gets it back years later; Gabriel holds it in between. They are not colleagues so much as consecutive parents, which is why both of them end up arguing with Philip about his children.
To get inside FBI counterintelligence, Philip invents Clark Westerfeld, courts and marries Martha Hanson — secretary to the man running the hunt for him — and has her plant a bug in her boss's office. The wedding is staffed by the KGB: Claudia plays Clark's mother, Elizabeth plays his sister. When the bug is found and Stan starts watching Martha, Philip forces the Centre to fly her out; she spends the rest of the show alone in Moscow.
The Centre wants the Jennings children recruited. Philip refuses; Elizabeth does not. In Season 3 they tell Paige the truth — and she promptly tells her pastor, which nearly ends everything. From sixteen she is trained by Elizabeth and Claudia. Henry is never told anything; he ends up at boarding school in New Hampshire, playing hockey, while his family's life detonates several states away.
December 1987. A priest's description of two churchgoers puts Aderholt on the Jennings, and Stan corners Philip, Elizabeth and Paige in a parking garage. Philip asks him to look after Henry. Stan lets them go. The three drive north for the Canadian border — and Paige steps off the train before it crosses, and goes back alone to Claudia's empty apartment. Philip's last word to Stan is that Renee may be one of them. The show never answers.
Every Russian on this show has at least two names, and several of the Americans do too. Keep these straight:
Three names, two people. Philip Jennings was born Mikhail Petrov — "Mischa" for short. His son by Irina, back in Russia, was named after him and goes by Mischa too. When someone in Moscow says the name, check which one they mean.
Same woman. Elizabeth Jennings is the American identity issued to her; Nadezhda is the girl her mother writes to on cassette tapes smuggled out of Smolensk. Nobody in Virginia has ever heard the second name.
Clark Westerfeld is a bespectacled federal auditor with thinning hair and no existence outside Philip's wig box. Martha spends four seasons married to him. The wedding photograph on her mantelpiece is a KGB operation.
Both are the Jennings' handler — the same chair, different occupants. Claudia has it in Season 1, Gabriel from Season 2, Claudia again from Season 5. Neither is their boss's boss: that is "the Centre", which is never a person.
The embassy trio, in order of rank. Arkady is the Rezident — the KGB's chief in Washington. Oleg runs the science-and-technology desk. Nina is a clerk who ends up working for the FBI, the KGB and herself, in that order.
The Bureau's three. Frank Gaad is the boss of the counterintelligence department, Dennis Aderholt the agent who does the careful work and eventually inherits the department, and Stan Beeman the one who lives across the street from the people he is looking for.
Two Mrs. Beemans. Sandra is Stan's first wife and Matthew's mother; she leaves him in Season 2 for a man she meets at EST. Renee is the woman he meets at the gym afterwards, and the one Philip cannot stop looking at sideways.
Both are married to the same man and neither knows the other exists in that sense — though Elizabeth has met Martha, playing Clark's sister "Jennifer" at the wedding and in Martha's own living room.

The youth pastor at Paige's church, and the closest thing she has to an adult who isn't lying to her — which is exactly why the secret she tells him nearly gets him killed.

Another illegal, twenty-five years deep, working inside a bio-containment lab. Born Vitaly Sorokin. He shows you what the Jennings look like without a marriage and without children: alone, and very tired.

The lonely teenage daughter of the CIA's Afghan group chief. Philip befriends her as "James" to get at her father's briefcase, in the storyline the show uses to ask what he has become.

A Mary Kay consultant who befriends "Patty" — Elizabeth in a wig — and becomes the only real friend she has ever had in America, right up until the operation requires her marriage to be destroyed.

A teenage agent for Vietnamese intelligence, on loan to the Soviets, who plays the adopted son of "Brad and Dee Eckert" in Topeka. A second-generation illegal already fully formed — and a preview of what Paige could be.

The Russian Orthodox priest who quietly reports to Gabriel — and who marries Philip and Elizabeth under their real names. In the final season the FBI puts him under surveillance, and his description of the couple is what finally undoes them.
A note on the portraits: these are the characters as they appear on screen — stills and cast photographs from The Americans wiki, cropped and served from this site so nothing loads from anyone else's servers. Facts, names and season numbers checked against that wiki rather than from memory. Chart reflects the complete series, all six seasons, 1981–1987 — spoilers to the finale.