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Johann Rettenberger

In the 1980s the bank robber Johann Rettenberger was the most wanted criminal in Austria. Known as Pumpgun Ronnie due to his weapon and the Ronald Reagan mask he wore for his robberies, he sometimes robbed two or three banks on the same day. Unusually for a bank robber, he was also a keen amateur marathon runner and had won several races. He jumped out of a window during questioning and escaped by running into the Vienna Woods. He only seemed to feel truly alive, truly himself, truly free when he was running.

Paul Erdös

Erdös was a Hungarian mathematician. Erdős published more papers than any other mathematician in history, working with hundreds of collaborators. He is also known for his  eccentric personality. Possessions meant little to Erdős; most of his belongings would fit in a suitcase, as dictated by his itinerant lifestyle. Awards and other earnings were generally donated to people in need and various worthy causes. He spent most of his life as a vagabond, traveling between scientific conferences and the homes of colleagues all over the world. He would typically show up at a colleague's doorstep and announce "my brain is open," staying long enough to collaborate on a few papers before moving on a few days later.