If you plan on playing Star Wars the Old Republic, register an account before 4th May 2013 and you will receive a free MT-4T Astromech Droid in-game mini-pet.
To qualify for the MT-4T Astromech Droid in-game mini-pet, you must have a SWTOR account by May 4, 2014 – 11:59PM PDT / May 5, 2014 – 6:59AM GMT. The MT-4T Astromech Droid will be delivered to you via in-game mail beginning April 29, 2014, or within 24 hours of creating a SWTOR account.