> Adrian Frutiger has designed the avatar’s structure with average strokes.

Sure sure, and storyboards were probably done by Picasso.

While that's quite a word salad sentence, there's a bit of truth to it -- the subtitle typeface that reads "The Last Airbender" is Adrian Frutiger's Herculanum, which is what you actually download when you click "Download Font" on that page -- which, ah, seems of dubious legality. The actual "Avatar" title looks clearly hand-drawn.

Thank you for that pointer. You made my day!