![image](https://comicvine.gamespot.com/a/uploads/square_tiny/11112/111123579/6125676-rex_%28robot_dog%29_%28earth-616%29_blackwulf_vol_1_3.jpg)
Rex
Ultron's faithful canine companion.
Name:
Rex
Publisher:
Real name:
Aliases:
Birth date:
None
Gender:
Male
Powers:
- Claws
First issue:
![cover](https://comicvine.gamespot.com/a/uploads/original/11112/111123579/6125676-rex_%28robot_dog%29_%28earth-616%29_blackwulf_vol_1_3.jpg)
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