It's best that I don't provide a portrait for this one to save youse from juicy spoilers.

First and foremost, look up Broca's Aphasia.  This will give you an understanding of how the Captain talks. Though he's a mute character, he does has have a few lines and makes all kinds of sounds.

Hence my requirement is, using the standard casting call club's line "Ladies and gentlemen, thank you for joining us today!", say it as you would as if you were a sufferer of Broca's Aphasia.

OPTIONAL:

I would like to be provided with an improv/ad-lib line of introducing "yourself" as Captain Fox to a child. Your time limit is 20 seconds.