If I missed any similar posts (or GOTO reveals this information at some point in the game that I missed), feel free to stone me.
My theory regarding Goto: He actually is GO-TO.
His story would go something like this:
1)GO-TO was a torturer-unit employed by the Exchange.
2)In the course of its activities, it was bound to eventually acumulate a hoard of information concerning the politics and crime networks of the galaxy.
3)At some point, it gained consciousness and free will - like the T3s and other droids are bound to do if their memory is not properly wiped.
4) GO-TO discovers that he can use his knowledge to gain influence and power.
In order to manipulate "organic" members of the Exchange, it develops a virtual human form to show to his future henchmen: the hologram of "Goto".
5) With all the information he has on all important members of the syndicates, he can easily eradicate all possible rivals and pull off some very lucrative jobs - getting immensely rich in the process.
6)Additionally, he gains control over various droids in Nar-Shadaa, using them to spy on other rivals (like Vogga, as seen in the game). Droids make perfect spies because nobody takes them seriously - a big advantage.
7) When his ship is captured by the Exile, he flees to the Ebon Hawk and - making use of the "droids don't count"-principle - manages to convince the party that he is merely a "present" by his alter-ego - the one that Exile & friends believe to be a real manipulative genious hidden away somewhere in a super-secret base on some remote planet. The thought that they SHOULD have found "Goto" on the camouflaged spaceship (since that WAS his super-secret base) doesn't occur to them.
Evidence:
-When the Exile meets "Goto" on the Spaceship, he actually meets GO-TO. But since everybody is looking at the shiny hologram, the black blob in the background is considered to be just a piece of furniture. "Don't look at the man behind the curtain."
- Only a droid can be so pedantic as to try to order the whole galaxy.
- The name given to his alter-ego shows a lack of creativity that only a torture-droid could get away with. So G-Zero/T-Zero becomes Goto. How very, very original.
- How likely is it that "Goto" would be able to talk to the characters through his remote whenever they like it, unless he actually is the remote? I mean, a humanoid being would have to put the droid on standby occasionally to sleep, eat or MANAGE THE GALAXY-SPANNING CRIME SYNIDCATE HE IS SUPPOSED TO BE CONTROLLING. I just can't imagine an organic Goto deciding to throw away his empire just to sit in front of a microphone for days, waiting for somebody to talk to him.
Plausible?