This is my idea to make an Enemy

Make two blocksters. One will be your character. Edit how you want them to look.

Blockster (Character/Avatar)

  Does - Mover
  Bump (Circle Tag) - Does - Explode [or freeze, hide]
  [Optional] Up - Does - Jump
  Does - Square Tag

Enemy Blockster

  Does - Circle Tag
  [Sight Line (Circle Tag) optional] - Does - Chase (Circle Tag) [or go to]

See Concept:Enemy for ideas on how to make your own enemies