Frumpkin

Frumpkin is a sometimes feline familiar of Caleb Widogast. He is voiced by Matthew Mercer.

As a familiar, Frumpkin can appear, disappear, and/or re-appear at Caleb's whim. Caleb can issue telepathic commands to Frumpkin. Caleb can also use Frumpkin's eyes and ears, though this renders Caleb's body temporarily blind and deaf.

Recalling a previous adventure, Frumpkin had taken the form of an octopus and was used as a cushion to break Nott's fall out of a burning building.

As of Episode 3, Frumpkin is currently in sparrow form.

Trivia

 * Liam shared his vision of Frumpkin on Instagram.
 * Caleb's ability to take control of Frumpkin is similar in function and appearance to a warg on "Game of Thrones".