How can you make a top 25 Facts You Didn't Know About Mario list? Mario is perhaps the most popular video game mascot of all time. Surely we know everything about him, right? Wrong! There are tons of hidden factoids about Mario and his games. Dinosaurs, drugs, advertisements, and transgendered egg beasts are all here in full force. Mario's past might be stranger than you realize. These are the 25 Facts You Didn't Know About Mario, the one and only.