Roberto "Bobby" Alejandro Martinez-Millan Luis Santiago, Jr. is a character from the Nickelodeon animated series The Loud House and its spin-off The Casagrandes. He is Lori Loud's boyfriend, and also the older brother of Lincoln's not-so-secret girlfriend, Ronnie Anne. He is a generally relaxed and easy-going teen who, early on in the show's run, was frequently trying out new jobs, though he never seemed to be able to hold them down because much like Leni, he is not very bright. Also like Leni, though, Bobby is very kind and compassionate, showing unending devotion to Lori and getting along well with all ten of her siblings, though he is also known to take offense if someone harms his little sister.
To date, Bobby's only appearance in a Christmas special was The Loud House's second season premiere, "11 Louds a Leapin'". At the beginning of the episode, Bobby is out shopping for Lori's Christmas present when she calls him to tell him that it doesn't really matter to her what he's going to get her for their first Christmas as a couple, saying that she will always treasure whatever he gives her. Bobby, however, cannot pick out anything good enough to buy for Lori, so he instead mails himself in a giant gift box to the Loud house as his gift to her, with an attached tag saying she should open it immediately. However, unbeknownst to Bobby, Lori is trying to overcome her bad habit of opening her family's presents early, and thus she does not open the gift box he has packaged himself in until Christmas morning. By that point, he is quite weary from having nearly suffocated inside the box, and asks for some food and water right before he passes out.
Later on in that season, Bobby, Ronnie Anne, and their mother moved out of Royal Woods to go live with their extended family in Great Lakes City one state over, setting up The Casagrandes and thus making Bobby's relationship with Lori (as well as Ronnie Anne's relationship with Lincoln) a long-distance one. He does, however, have a vocal cameo in the online-exclusive Loud House short "12 Days of Christmas". When Lori first sings her line in the titular song, Bobby is heard giving her a loving Christmas greeting over the phone.