I was thinking of Jim Carrey playing Eggman and how he would be able to portray him well because he always becomes the character he plays but what notable traits does Eggman most have? 

I know a good bit of early lore (games, SatAM cartoon, early comics), but haven't kept up lately with all of the new stuff and would love to discuss his character with the community.

What kind of info is there about what made him who he is, what makes him tick, and why he's so obsessed with turning woodland creatures into robot servants? His role in Robotopolis and his relationships with others would also be interesting to explore.
Thoughts?

I don’t think Eggman has one personality per se. One one hand you have him portrayed as both a bumbling fool and an evil genius in both the games and in the TV shows. I much prefer him as an evil genius with a touch of fool. Lol, if that makes any sense.

As far as him being obsessed with making robots, I think it’s just his drive to conquer the world.