sentences:  This made predicting attendance and budgeting for InvaderCON "very tricky and extremely risky" according to Wasabi Anime.Bryan Konietzko, the co-creator of the Nickelodeon animated series "", was a storyboard artist and art director on "Invader Zim".Konietzko has said that the character of Aang was inspired by a drawing of an adult character he had originally designed while working on "Invader Zim".