User blog comment:I Like Hetalia/D:/@comment-2241574-20100928222453

M-W Online Dictionary: a person of encyclopedic learning

Freedictionary.com: a person of great or varied learning

Wikipedia: a person whose expertise spans a significant number of different subject areas

Oxford Advanced Learner's Dictionary: a person who knows a lot about many different subjects

You can decide which one you like...but may I ask how this question relates to Hetalia?