I have an idea for a level, but I was wondering if it's even possible to script basic movements for a NPC?

Also what other scripting options are there? Can you delay the response time of things? (say to play an audio clip in the interrum)

Sorry for the newbie questions. While I've done my share of programming I still consider myself more of a story writer/creative guy than programmer/technical guy, so I'm trying to get a feel for what is technically possible with the portal 2 sdk.

I don't think portal 2 supports npcs, but you can experiment with generic_actor.

Portal 2 does support npc's (Glados and Wheatley duh) but they do not fully support walking npc's. I remember someone posted up an example map here: post59128.html?
As you might have guessed I couldn't get it to work, but it has the simple idea behind it.