Using the Goo Enhanced Green Goblin is easy and fun. First, to activate his special power, find the Core (capsule) under his chest and crush it. You'll see the colored goo flow inside his body, changing his appearance. You can also have a great time squishing and squeezing his super - squishy body. And don't forget to stretch him up to 3 times his size and watch him return to his original shape. When it comes to maintenance, keep him away from sharp objects to avoid any tears in his stretchy material. Also, try to keep him clean by gently wiping him with a damp cloth if he gets dirty. Remember, there are 5 different characters in this collection, so you can collect them all and have more exciting adventures.