We've been to LTT on just about every trip since 2003 and Minnie, Pluto, Chip and Dale were always there. In 2003 and 2004, the fifth character was Meeko. In our trips after that, Goofy has been the fifth character.
We love LTT and the interaction with the characters. We've been to a number of character meals and find the characters at LTT the most fun. Oh, when I say "we", I'm talking about adults. The last trip was the first time that we were there with a child -- our 9 month old granddaughter!