The cat like alien creature that Captain Marvel keeps as a pet. While it may appear as a normal cute
Earth cat, inside it's mouth contains a shit ton of tentacles, smaller mouths and even pocket dimensions and
bubbles of
time.
Rocket
Raccoon - *Trying to kill Chewie the Flerken* You have a Flerken on your
ship!
Captain Marvel - That's my Cat!
Rocket
Raccoon - That is not a "cat"! That is a Flerken!