Roger (American Dad!)

According to "Frannie 911", Roger has been on earth for over 60 years, having arrived in 1947 as a result of being tricked,[8] led to believe he was "The Decider" in whose hands the fate of mankind rested, when in fact he was serving the role of a crash test dummy. Earlier, after causing his aunt's spaceship to crash, Roger lived with a family of pioneer fur trappers that died traveling on the Oregon Trail in the episode "OreTron Trail". There is also the possibility, he or another member of his alien race came to earth in early antiquity, evidenced by the premiere of season 13: in the episode, a stone carving is depicted as an alien bearing physical similarities to Roger, the alien squatting above a pyramid with two Egyptians presumably praising him and hieroglyph characters surrounding them. In the episode "Naked to the Limit, One More Time" however, it is evidenced that Roger remains on Earth by will, the episode revealing that he can simply call for his alien kind's spaceship to return him to his birth planet if he so desires.

Details on Roger's actual family and pre-Earth life have yet to be shown on the series. Although in the episode "Lost in Space", a brief clip revealed that prior to Roger's life on Earth, he was involved in a homosexual romantic relationship with another member of his alien race, Zing; however, Roger cheated on Zing, blatantly making out with a human male in front of him. It's also been revealed in the episode "I Am the Walrus" that Roger ate his father when he turned 15. Roger revealed in the episode "OreTron Trail", that he once visited Earth before in the 1800s after crash landing with his aunt Caroline and she died on impact.

Roger came into contact with the Smith family when he saved Stan's life back when Roger was a fugitive of Area 51 (four years prior to the show's beginnings). Feeling he owed Roger a life debt because of this, Stan rescued him from government capture and allowed him to live in his home. Stan has allowed this in defiance of his employer, the CIA. Roger now lives in the Smith home and uses the attic as his hideout/room/bar.

After Stan took Roger in for saving his life, he felt that it would endanger him and the rest of his family if it were to be discovered that Roger is an alien and living with them. Consequently, Stan forbade him from leaving the house when the series first began, even in disguise. Confined to the house in the first couple of episodes, Roger was miserable and malcontent.[4] However, Roger is able to skillfully use disguises to exist in the outside world, which has become a major plot device in following the first few seasons. Adding to this, he's created countless alter egos to go along with them.[7]

7 of Rogers different disguises in the episode ''The Two Hundred''.

Roger has, however, abused this practice, leading numerous lives and outrageously deceiving numerous people. In fact, some of Roger's characters are in prison, while others are widely despised, and others inexplicably have full-fledged human families and are even married; several of his characters somehow have birth children while others are graduates of Howard University. Roger also uses several of these personas to act in a criminal manner, as several of his alter egos have been seen to engage in robbery, sexual assault, police corruption, identity theft, drug trafficking, child abuse, and with one persona even admitting to being wanted "for a series of prostitute murders".

As the series has progressed, Roger's personas have inexplicably developed their own lives that even Roger himself can be unaware of and his control has been shown to be tenuous at best. In "The Horse Whisperer" he realizes seconds before walking into a room (to see a horse therapist) that he is the one inside. In another episode, both he and Stan express surprise that a character introduced by Roger wasn't one of his personas.

Despite his numerous disguises consisting of only a different set of garments and hair with no effort to disguise his gray skin, non-human face and body features (with some exceptions, like additional bodyweight, facial hair, or wrinkles), Roger has been capable of deceiving virtually every single person he interacts with without ever being discovered as an alien; not even by Stan's colleagues from CIA, who according to him, have "an entire floor" looking for Roger. The Smith family is the only exception; however, for each member of the family, there is one individual alter ego they can not recognize as Roger. On top of that, Roger has been sent to the hospital several times over the course of the series, and medical personnel, for some reason, have never found out that he's not a human.[9]

Klaus and Roger's relationship is best described as a sibling rivalry. Like with his relationship with Stan, at times Roger and Klaus dislike each other and at other times they get along well. Roger is seen to be incredibly spiteful toward Klaus and insists on trying to make him feel despised, saying things like "You can't participate Klaus, I hate you. I say that not out of anger but as a fact" in "Great Space Roaster" and "It's like you want to be kicked out of this family" in "The One That Got Away". Klaus does things to get Roger into trouble for his amusement, like when he tricked him into eating Francine's potato salad in "Deacon Stan, Jesus Man". When a horrified Roger asked why Klaus would do something like that he just laughed and said "I'm German, it's what we do." In "A Piñata Named Desire", after Klaus made a comment about acting, Roger simply knocked Klaus's fish bowl across the room, smashed it against the wall, and walked out of the room as if nothing had happened while the fish lay gasping on the floor.

Among everyone else living in the Smith household, Klaus is very much the most aware and sensible of Roger's contemptuous, abusive, and insanely-vindictive nature of selfishness and lack of morality and occasionally tries to warn the rest of the family against listening to or getting involved with him. Such instances, however, are ignored by everyone's naivety and general inability (or lack of interest) to take most matters seriously or remember that Klaus is a "man in a fish's body" rather than just a mere talking goldfish, as said in "Dr. Klaustus".

Although Roger has claimed to hate Klaus in the past, they do have a bond and are capable of being civil to each other such as when they head to Europe together in "Red October Sky". Further evidence of this can be seen in "Pulling Double Booty", as Roger and Klaus are quite content to watch a movie together and show annoyance when they must pause it as Stan intrudes with the cookie dough. Another example is that Klaus is often shown in the attic with Roger as he tends his fake bar in many disguises while in "Live and Let Fry" Roger dresses up as Klaus, the human, to help him get access to a family member's will. In the end, it turns out to be a trap to lure Klaus out of hiding and Roger gets beaten up because Klaus owed some money to the East German Mafia. However, Klaus stays with him and keeps him company during his recovery, making sure Roger has sufficient pain medication to help him through it. Klaus was also the only member of the Smith family to remember Roger's birthday in "1600 Candles" and the alien seemed genuinely touched that he had bothered to prepare a birthday surprise for him.

Klaus and Roger engage in a sexual relationship in "Kloger", but Klaus breaks it off when Roger starts to want to act like a real couple, as Klaus was only interested in the taboo aspect of sneaking around the family for their relationship.