Nero was the adopted son of Claudius, and is a four-letter word in the crossword. Oedipus is a seven-letter word in the crossword and is a character from Greek mythology who unknowingly married his mother. HAMLET is a six-letter word in the crossword and is a character from William Shakespeare's play of the same name. EGO is a three-letter word in the crossword and is a term used to refer to one's sense of self-importance. Ernie is a five-letter word in the crossword and is a popular Muppet character from the television show 'Sesame Street'. Lastly, Swee is a four-letter word in the crossword and is a nickname for the character Sweet Pea from the comic strip 'Popeye'.