Data's INTP, Robopop's INTP. There's the connection.
What's interesting is that in the avatar data has a chunk of his head missing, why would he choose that specific avatar hmm.
Also, the word "robo" in the nickname may suggest that he sees himself more logical and less emotional compared to most people, resembling a "robot".
But, he didn't say robot he said robo, which sounds more cute, than robot, which is more emotionless, and pop, adds to the missing of the last letter, so even though he may resemble a robot he also resembles pop, these 2 things somewhat contradictory, showing the other aspect of his personality. Maybe a sangvinic trait?
Also the comment "shy, private, secretive. " may actually be some reflection of himself.
Although I may be wrong...who knows...it's just speculation.