Hulk Birthday Cakes My Son Is Turning 4 And Wants An Incredible Hulk Birthday Party...IDEAS PLEASE!!!

My son is turning 4 and wants an Incredible Hulk birthday party...IDEAS PLEASE!!! - hulk birthday cakes

Children will participate. I have the invitations to "come dressed as their favorite heroes, or whatever tickles your mood" and get pictures. It will make the balloons to "muscle and can be painted faces, green foods are (still need more ideas), what is it? Thank you all, what will help!