Nostalgia Bait
Pulling in old characters/concepts and ideas from classic movies/tv shows and putting them into new media to sucker in their fans and to make them believe something is "good" because the familiar is there.
Person 1: Wow, Star Wars Rogue One is so good. I clapped and cheered when Darth Vader showed up. R2 D2 and C3po also appeared and therefor this is good Star Wars Content.
Person 2: I can't believe you fell for the Nostalgia Bait.
Person 2: I can't believe you fell for the Nostalgia Bait.