Possible Clues:

• Canadian-born hockey great
• Hockey Hall of Famer Bobby
• Legendary Bruins defenseman
• The Boston Bruins retired his #4 in 1979
• Yossarian's tentmate in 'Catch-22'
• Boston Bruin Bobby
• Stick figure?
• Nine-time NHL All-Star
• #4 at Boston Garden
• Canadian hockey legend