What's big, green, and sits in a corner?

Highlight below for answer:
The Incredible Sulk.

Okay fine not funny.


Edit: Latest news! Did you hear about the escape of one of the IMH patients? The fella's known to be dangerous. Huge posters have been put up. If you've spotted the fella, do call 6426-7426 (6-I-AM-SIAO).

Scary right!