how to unlock among us charecters?

[king of cats]

i bought the dlc and play the game to level 10 i think,but there is no among us shown on charecter menu,there are not even there

[Moonbane]

Guess youve forgotten how you did it in the previous dlcs.
Play the new map, find the coffin in the map. That will give you the red crewman and starting you on unlocking them.

[The Raven of Chaos]

Once you play through the DLC, some are unlocked in the main game by evolving the DLC weapons, others by killing enough of certain enemies.

Or if you have access to the cheats screen, the wiki has the unlock codes for them