Mr. Frank is a fictional character who is the protagonist of a popular children's book series. He is a kind and wise old man who is always ready to help his friends and family. The crossword solutions for the term MR. FRANK are CESAR (5 letters) and OTTO (4 letters). CESAR is a Spanish name meaning 'head of hair' and OTTO is a German name meaning 'WEALTH'. Both names are fitting for Mr. Frank, as he is a wise and generous character.