15/15! Differentiating between Hunter and Charlie is actually pretty easy. Although he was arguably as much of drug-addled maniac as Sheen, Thompson always knew exactly what he was and what was happening around him. Charlie's quotes evince almost no actual self-awareness or understanding.

I think it's actually meant to resemble the old pre-OS X Macintosh trash can icon, more than anything from a video game.

These posters are designed as parodies of traditional Chinese New Year artwork, chubby babies and all. It all makes perfect sense if you know the reference.