The Detroit Free Press reports that Ferndale police say the man hit the same Charter One branch in October and again last week.
Lt. William Wilson says tellers remember the man as tall, thin and "having very offensive breath and real yellow teeth." Witnesses also say he looks and smells dirty.
Police say he showed bank employees a note that demanded money. He implied he had a gun but tellers didn't see any weapon.
The suspect escaped with about $1,000 in the latest robbery.