Putting this in spoiler tags so the people avoiding info can be satisfied.

Uh, I heard he doesn't likes people with hats, and since ALL companions have their quests + special stuff for completion, Rex will most likely be a very talkative robo-dog

Rex will most definitely talk. Cyberdog and K-9 did.

Yes, but Cyberdog and K-9 were 100% cybernetic things. Rex is a cyborg (Living with machine compotents)

http://thepostapoc.com/wp-content/uploads/2010/08/A-Boy-and-His-Dog.jpg

I wonder what his voice-acting will be like?

I'm kind of hoping for a Scooby-Doo kind of voice.
"Rikes! Ruper Rutants!"

I'd rip my head off. :brokencomputer:

I hope it's like the dog from UP lol.

I'm not gonna lie that would be awesome could you imagine pitch black complete silence. You turn on your night vision and see a death claw. You raise your rifle to perform a fatal shot when out of nowhere..."Rut Roh!" I would laugh for days. Maybe it could have Jar Jar Binks' voice so it would be even more annoying.

Read on Fallout wiki that he hates hats and people who where them.....I guess that means hell attack you if you were a hat, not like armor but pre war hat, cowboy hat, ect. I REALLY like his design, at first I thought Id dislike having Rex instead of Dogmeat, but Rex just looks so much cooler

You know who would be a great voice actor for him? And I mean this in all seiriousness, I think it would be awesome to have a robot dog that sounds like.......CHRISTOPHER MUTHA' EFFIN WALKIN!!!!!! Not only would he play a great robot dog, but just think how intertaining it would be to run around with a dog that has long.......pauses...in...his sentences....... XD

That's cool.
I like it when they have actual personalities, I remember using the Fat Man on Dogmeat in F3, just to have him walk back to me and just silently follow me back to Tempenny, then he magically healed when I took a one hour nap.

(yes im replying to myself,haha) I might actually get the PC version just so I can mod Rex to be voiced by Christopher Walkin