Depending on what your trying to accomplish simply adding a solid behavior probably won't work.
If your enemy pathfind or follow/chase player you might have to use something like this:
https://www.scirra.com/forum/how-do-i-stop-sprites-from-overlapping-each-other_t165432
For advanced topic follow the last post link to ROJOhounds example capx... powerfull stuff.
Well, I tried the example... but I'm using the free version and that doesn't allow for the use of Families like the example. Is there a way to accomplish with the use of families?
I've looked over the example and I see how it works using the instance variables of distance and angle so I can see that using Families can do way more than I thought.