DESCRIPTION
But it really isn't. Also it may or may not be sentient. Play time. :)
Fun fact: I made the goo using a strange mixture of techniques, ranging from traditional modeling (the pool inspired by lava lamps), through liquid sim enhanced with sculpting (dribble and strings between pool and char), and the fancy modeling/sculpting/retopo techniques that ZBrush offers (big grabby part). So all the goo is made of four objects! Which maybe doesn't sound like a good thing from a technical standpoint, but it was fun and educational to make, and it looks good in the end, so I Do Not Care.
Enjoy! :D