Making Bosses Move Is Simple

[Superlogan41]

The first you want to do is: Set the block to Solid

https://postimg.org/image/gw3wpytpf/

Then Open the boss object an add a Create Event for movement and set the arrows to red and the speed to 3-5 (Are 8 arrows and red)

https://postimg.org/image/3jsncbijx/

Then add a Collision Event with the block for bounce (Looks like a K)

https://postimg.org/image/m1yu2br0j/

And done your boss can move to anyway it decides to, remove some arrows to make the boss move in less directions