We were there this past Dec. The characters at H&V were Handy Manny, Jake, June & Oso.
Jake & Handy Manny also meet outside the Playhouse Disney theatre. I would see them there if I were you. Jake drew a little sword with his autograph & Handy Manny Drew a nail with his. It was neat to have something different. Look at the times guide when you enter the park for there exact meet & greet times. There was only one character there at a time when we were there so they must switch on & off. You would have to go twice to see each of them.
I did not see June or Oso in the park. I am not sure if those characters have a meet & greet. Sorry, but maybe someone else will know about those two.
Good luck!!