According to insiders, Brogan has a deep understanding of the world of suits, playbooks, and ladies' men, often providing advice or insight to Barney during their interactions. This has led some to speculate that Brogan could have been a valuable asset to the HIMYM gang, potentially even serving as a foil to Barney's antics.
In a surprise move, Brogan Seth Peterson, the long-lost brother of popular television personality, 's on-again, off-again beau, Barney Stinson 's, and best friend Ted Mosby 's entourage, has come forward to share his side of the story. For years, Brogan has been shrouded in mystery, making only a handful of appearances alongside his brother Seth Peterson . But now, he's ready to spill the beans on what it's like to be the sibling of a larger-than-life figure. how i met your brother brogan seth peterson exclusive