Ashley and Kayla have been best friends causing mayhem since high school. When they aren't quoting SpongeBob or binge watching Criminal Minds or musicals, they love spending time together and of course bothering Brandon. Ashley is the other side to Kayla's fair coin and she could not think to have anyone else with her on their big day.

Ari is the sister Kayla never knew she always wanted. She may be taller but Kayla is the "Big" sister. Ari has been annoying Brandon his whole life and with Kayla, she has an accomplice. From face masks, deep talks, girls' days, and countless Starbucks runs, Kayla and Ari truly are inseparable soul sisters.

Amber is the other new Mrs. Diehl. Amber and Kayla are partners in crime causing the Diehl boys all forms of trouble. Amber is the older sister she never knew she wanted. Amber is the mother of Brandon and Kayla's beloved nieces and nephew. Kayla was Amber's 'Bad Influence' for her wedding and now she is hers.

From beating each other up as kids to now wrestling as adults, the Diehl boys have been unbreakable hot-messes together. Brandon was always Ryan's baby brother but now they're simply friends. When Ryan isn't breaking another limb for the thousandth time, he is a dotting father to their nieces and nephew. Brandon was Ryan's best man, now it is Ryan's turn.

Sam is Kayla's older brother but he has always been there for her, not only her friend, but her guardian. Sam may be shorter than Brandon, but Sam is always ready to wrestle both Bran and/or Kayla with (you guessed it) prison rules. When Sam's not living it up in NYC, he is always down for Brandon and Kayla's many shenanigans. Sam is Kayla's best friend, but he is now also Brandon's.

Zach is Brandon's "work husband". They are golf and drinking buddies together and cause all sorts of chaos at work. When they're not "flirting" at work, one can easily find them at the driving range. Brandon may be the taller one but Zach always knows to show who the older 'boss' is.

Ryan is one of Brandon's childhood friends. He is a close friend of both Kayla and Brandon, and his parents are Diana and Frank Diehl's best friends. Ryan is an excellent and extroverted person, and Brandon and Kayla could not imagine another person marrying them

Diana is the mother Kayla always dreamed of, and the one Brandon thanks his lucky stars for. She is the most loving and caring mother you could imagine. Brandon loves to pick on her as she does to him. Di is one of Kayla's best friends and has treated her as one of her own since day one. Di is the manager of the "fun house" and deals with all the Diehl kids. Kayla has always called Di "mom" but now it is official

Frank is the wisest man there is. He is everyone's confidante and the father everyone wishes for. He welcomed Kayla with open arms into his family, without question, and loves her as his own. Frank is Kayla and Brandon's biggest supporter and party buddy. Frank is the kindest person anyone has the privilege of meeting. Brandon is Frank's twin, and he should definitively have been named Frankie V. Kayla always called Frank "dad" but now its official.