Let's start with the easiest question.

What is Eggman's real name?

He also likes cheese covered popcorn. No comment.

What is Eggman's favourite food?

Egg egg egg egg. Eggman might always lose to Sonic, but he doesn't play when it comes to being a narcissist. 

I can't really say fleet or carrier etc because it would give it away, so ''flying creation'' it is.

What is the name of Eggman's flying creation in Sonic Adventure?

What was the catalyst for Eggman going temporarily insane in the Archie comics?

Since Eggman is under 50 and the whole Ark thing was 50 years ago, I wonder how long after Shadow's creation Eggman was born. That also makes Shadow technically older than him by a few years.

Their parents were close, so he knew of her.

I think the answer to this is very obvious. 

What relation does Eggman have to Maria?

Sorry if this is false, I just swear it was said or alluded to somewhere. If you disagree with me ignore this question in your score at the end.

I don't know if this is canon, but I'm pretty certain it is.

Which robot creation does Eggman consider to be his greatest?

Marc was the VA of Gerald for SA2, and Ben + Sean were both VAs for Black Doom. So Deem Bristow was the original voice of Eggman!

Mike Pollock has been Eggman's actor for decades now, but there was one before him. Who?

Can't rule the endless abyss that is space. 

He didn't have a choice, he was at the mercy of Sonic and Shadow.

He knew that the world being destroyed would leave nothing to rule.

Tails was able to convince him to stand down, mostly thanks to his weapon.

He didn't want Sonic to die to anyone or anything besides himself.

What caused the temporary alliance between Sonic and Eggman during the final events of SA2?

If you got this question wrong you absolutely do did not play Sonic Adventure 2.

Eggman has never been playable in any mainline Sonic game.

Besides creating evil robots, fighting Sonic and building secret lairs, what does Eggman love?

A short, relatively easy about Dr Eggman from Sonic the Hedgehog!