Dueling Works: The franchise seems to be this with Frozen, another Cash Cow Franchise spurred from an animated musical film, as both seem to have similar merchandise sales, are popular among young girls (though Trolls appears to go towards a more gender-neutral aiming overall), and feature a Troll species. In addition, there were two times when both franchises have had their own works duel with one another:
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The first holiday specials for both franchises, Olaf's Frozen Adventure and Trolls Holiday, were released on the exact same day. However, the former was released in theaters with Coco before airing on ABC two weeks later, while the latter aired on NBC.
The sequels to both films were slated to be theatrically released five months apart. However, Trolls: World Tour went straight to video on demand due to the coronavirus pandemic. Frozen II also had it's Disney+ release bumped for the same reason the theatrical reason for Trolls World Tour got cancelled, as it was originally slated to launch on the service in June.
Adored by the Network: FX, which was aleadry known for frequently airing some Dreamworks movies, loves showing Trolls almost every week. In 2019, from December 22nd to 27th, it was aired along with The Secret Life of Pets every day, occassionally getting a second airing during late night hours.
Bad Export for You: The only home releases with the movie's 3D version are in Mexico, Portugal and Sweden.
Breakaway Pop Hit: Lead single "Can't Stop the Feeling" seems to have been tailor-made for this trope. The fact that the song came out long before the film did definitely help.
The Cast Showoff: Anna Kendrick and Justin Timberlake do all their own singing.
Missing Trailer Scene: Some scenes in the trailers are different from the actual film to avoid spoiling certain plot events, such as Poppy becoming Queen of the Trolls (which was aleadry seen in a deleted scene included in one of the earlier trailers, though) and Branch getting his colors back.
To a lesser extent James Corden. Whenever he acts he finds himself playing roles that evoke the Fat Bastard or Butt-Monkey tropes. Here he's a peppy Genki Guy (which is closer to what James is like in Real Life).
Not exactly this but, in How the Grinch Stole Christmas!, Jeffrey Tambor played a guy trying to get a woman played by Christine Baranski to fall in love with him. Here, Baranski voices an Evil Chef who's trying to get all of the trolls eaten; the trolls' leader King Peppy is voiced by Tambor.
Anna Kendrick and James Corden also count in this case. They had played with Baranski as part of a group of allied or related characters in a number of films like Into the Woods, whereas here they voice the trolls Princess Poppy and Biggie.