If you utilize the search function at the top of the page and do a title-only search for 'Liberty Tree characters' you'll see 17 posts this year from people asking the same thing.
I'm amused by the amount of obsessing over this. And we enjoyed countless character meals with our kids when they were younger, but are characters really necessary at 3 of the 5 sit-down restaurants in the Magic Kingdom, especially when you also have character meals at each of the monorail resorts?