Tonypa Tilebased RPG Game Help - Enemies not walkable

Im working on a tilebased rpg game using the tutorials from tonypa. I want to make NPC’s and have been trying to find out how to do this for forever. I am using the same method that they used to make the enemy, only I need to change the following things about it -
You need to not be able to walk on it.
Pressing spacebar faces you and opens a talk sequence
Some may have a set series of actions (not just random movement). Especially when speaking with them or after a certain action.

If anyone is familiar with these it would be an insanly big help for any advice. Thanks! ~Jeff