Don't know how to do enemies

[Battle system arcade]

Ok, i've been developing an RPG for quite some time now.
I've called it "RPG Parodies", since it makes fun of the old rpg clasics.
But, with the pass of time, the project got bigger and bigger.
I'm still far from finishing it, BUT it's progressing nicely
Up to now, i have almost everything worked out...
The only thing left to do is the battle system T___T
At first it was going to be in turns as almost every other rpg that exists, but i wanted to have something unusual for most rpgs: an arcade battle system
(i know that games like radiata stories and FF cristal chronicles have this, but it's not very common)
So...
What I did was copy an example of zelda in gm that i found (credits will be given) and edit it to fit my game...
But I can't seem to make any good enemies -_-
I tried to copy the behavior of the zelda enemies... but it is imposible for me u_u
Can anyone help me with this?

(sorry if my english isn't very good, i'm from argentina ;D )

[blub the glub]

Flying enemies are always easy to make. all you need is a sprite of a bird flapping its wings, and sitting still. then you make a path of a circle. then in the object of the bird it does the circle in an alarm. like this:
CREATE: ALARM 1 = (No. of steps before bird does circle)
ALARM1: do the path and then set alarm 1 again.

[IsmAvatar]

You don't need to keep calling the path in the alarm. One of the path options is "endaction", which is what it does when it finishes the path. Set this to "repeat". There is also an End Of Path event under Other, if you really need to check something when a path ends - no alarms needed.