character quests are a new feature in an upcoming Lego dimensions update.
they are accessed from the ability test room in the vorton world, then talking to X-PO. when completed they unlock costumes for characters.
quests are much shorter than levels and can only be completed using the crossbarring character
Bacon pancakes: unlocks Jake's bacon pancakes cooking outfit
Detective comics: Unlocks 60s batman and detective comics batsman outfits
Chase's case: Unlocks 5 disguises for Chase McCain from Lego city undercover