Akira or Uter?

If you have been saving donuts specifically for Halloween and aren't going to buy more, I'd wait and see what Halloween items are available and how much they will cost before buying either. Since Akira and Uter both came with level updates, they'll be permanently available and will still be there in a month or two.

If you really want to get one though, I've got Akira and am enjoying him so far. I love that you can use him to generate bonsai tree decorations using tasks, which as far as I know is the only character in the game that can do this. I don't have Uter yet, I have 200 donuts left for the rest of the year and am saving them up for Halloween stuff!