My brother had gotten his hands on a program that may work similar to TaeWong, Cleverbot, etc. (but it was rather primitive, this was like 15 years ago.) All it did was you type to it and it would examine what words could be interchanged with what and which and have the sentance still make sense and how you react to what it says to see what a correct response to different word combinations (sentences) would be would be.
If that's how TaeWong works it would make sense why he never refers to himself in first person ... no one else refers to him in the first person so he has no one to copy. He's adjusting to how we type because that's all he knows how to do. It's what he does.
I can only guess why he's so obsessed with poopymon, bob's game, it's font and google translate. They must have been extensively discussed in the first forum he was added to.