Family Guy has opened a Pandora’s box of confusing animal and human relationships, but Brian fathering a human son is an ever-present plot hole. In season 6, the series introduced Dylan, Brian’s long-lost teenage offspring. Dylan is not only a human character but weirdly older than his dad.
In Family Guy season 6, episode 11, “The Former Life of Brian,” Brian discovers he’s fathered a son with his ex-girlfriend Tracy Flannigan (voiced by Rachael MacFarlane), who, after introducing Dylan (Seth Green) to Brian (Seth MacFarlane), sends the kid to the Griffin’s front door. Brian initially rebukes his son but later in the episode becomes overly protective of him. Defying nature as a hard-drinking, hindleg walking egotist, Brian is one of few dogs who can speak in Family Guy as well as attempt to write novels and screenplays. Brian’s personality traits define his relationship with his son. When Dylan returns in season 12, episode 11, “Brian’s a Bad Father,” Brian reveals he's willing to exploit his flesh and blood when he extorts a screenwriting gig from Dylan’s new Disney show, Parent Boppers.
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Convincing human behaviors make it easy for audiences to look past Brian’s animalistic inclinations. After twenty years on-air, Brian’s pseudo-human status has rarely been questioned. Yet, for all of Family Guy’s persuasive storytelling, the confusion surrounding Brian’s fathering a full-on human being remains one of the series’ biggest question marks. Clearly, Family Guy is no stranger to testing nature’s boundaries.
When Vinny the replacement dog was introduced as Brian’s short-lived successor in season 12, episode 6, “The Life of Brian,” he tells Peter
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