If you are playing on Hardcore any companion can be killed, Rex included. Otherwise, companions will simply be knocked unconscious and can't be killed. If you never finish the quest Nothin But a Hound Dog, I believe Rex dies as part of the end game sequence. I've never not finished that quest though, so I'm not sure.
if you mean rex you get it when you recruit him
You can get Rex by talking to The King, in Freeside. And he will ask you to get his buddy a new brain. (Rex) And then you can get him the Legion brain, because it is my favourite, and probably the best. :)
from the kings in freeside you do some stuff then ask about Rex the robot dog and so a long quest then he follows you aronund
kind of. There is a dog in the game, but he's half robot (but dog none of the less). His name is Rex and you get him at The Kings School for Impersonation.
Each companion in Fallout New Vegas has a quest (or two).-Arcade Gannon: For Auld Lang Syne-Cass: Hearache By The Number-Veronica: I Could Make You Care (and unmarked quest You Make Me Feel Like A Woman-Raul: Crazy, Crazy, Crazy (and unmarked quest Old School Ghoul)-Boone: One For My Baby and I Forgot To Remember To Forget-Lily: Guess Who I Saw Today (and unmarked quest Lily and Leo)-ED-E: ED-E My Love-Rex: Nothin'But A Hound Dog
Rex Hays died on September 8, 2006, in New York City, New York, USA of cancer.
if ed-e died he is no longer you companion if you are trying to get veronica or raul as you companion u need to fire boone. there is a diffrence between a compaion and a follower a follower is someone like ed-e or Rex. a follower is someone like veronica or Raul.
I find ED-E to be a lot better than Rex, particularly on hardcore mode. Rex has a high perception and no ranged attacks, so when he detects an enemy, he runs straight towards it and usually gets him handed to him. Plus, if you upgrade ED-E's attack abilities by lending him to the Followers of the Apocalypse, I find he can actually do more damage than any other companion. Also, he plays that sweet little tune whenever he enters a battle.
Rex Mossop died on June 17, 2011, in Sydney, New South Wales, Australia of complications from Alzheimer's disease.
no, captain rex does not die. at least... not yet..
This depends on what you mean by dog. You can get Rex who is the Kings cyborg dog, but not any real dogs as far as I know. If you want Rex, you need to do some missions for the king, and even then you only get him for a limited amount of time. but you have to not be infamous at freeside or the king will not let you
Rex Brinkworth died in 1998.