The identity of Cat Valentine's brother has remained a mystery since Victorious first aired, but by taking a look at the Henry Danger cast, we might've just cracked the case! Not only is Frankini a musical maniac like Cat, but he's played by Frankie Grande, who is Ariana Grande's real-life brother... coincidence? We think not. Let us know your thoughts in the comments! ►► Subscribe for More: https://at.nick.com/NickRewindSubscribe►► Watch More from NickRewind: https://at.nick.com/NewRewindVideos►► All That on YouTube: https://at.nick.com/AllThat►► Nickelodeon on YouTube: https://at.nick.com/Nick►► What’s On TV? : https://at.nick.com/TVSchedule#Victorious #HenryDanger #ArianaGrandeGET MORE NICKREWIND:Like NickRewind: https://at.nick.com/NickRewindFacebookFollow NickRewind: https://at.nick.com/NickRewindTwitterNickRewind Instagram: https://at.nick.com/NickRewindIGLike All That: https://at.nick.com/AllThatFacebookFollow All That: https://at.nick.com/AllThatIGLike Nick: https://at.nick.com/FacebookFollow Nick: https://at.nick.com/TwitterNick Instagram: https://at.nick.com/NickIGNick Snapchat: https://at.nick.com/NickSnapchat Visit the Official Site: https://at.nick.com/OfficialGet the App: https://at.nick.com/Apps The NickRewind channel is the OFFICIAL home of your favorite ‘00s sitcoms and NickToons. That’s right—we’re talking all of your slime-covered Nickelodeon childhood dreams come true! Get the full love drama from Relationship Timelines, see your fave characters like Sam Puckett’s Most Savage Moments, or find out what OG Nick stars like Devon Werkheiser or Daniella Monet are up to today with Nick Reacts and Throwback with Nick! Tune in every week for exclusive digital content from all of your throwback favorites like Victorious, iCarly, Sam & Cat, Drake & Josh, Zoey 101, and so much more!