A made up character thats a favorite, is Crispy, Itachi's bunny rabbit.
Said to only make his flashes with Paint and a Strawberry, (??) Hes a very good animator. He used his own voice for all of the characters.
Sadly, after going to war, Omnistrife passed away. R.I.P.
Hes been featured in some other Naruto parody flashes, most often by those who did their own FWA series, after being inspired by Omnistrife.
Though there was some disputes about whether he died or not, I'm quite sure he is.