It's called "Ecto Goo."

"Ecto" what? I'm sorry...

You have completed my Ecto-Morphicons!

This ecto-containment system... is going to require a load of bread to capitalize.

This ecto-containment system Spengler and I have in mind... ...will require a load of capital.

His Ecto-Morphicons were buried near the chamber. If lvan escapes, he'll find them.

First I'll turn them into zombies and then order them to dig up my Ecto-Morphicons.

I thought my Ecto-Morphicons would be dug up by now.

No time to waste. My Ecto-Morphicon machines must be unearthed by sundown.

Once my lovely little Ecto-Morphicon machines are up and running, spreading ooze throughout the world,