Related Clues:

• Diehard
• Diligent worker
• Extreme fan
• Fanatical sort
• Fanatical follower
• Fanatical one
• Extreme one
• Fervent one
• Gung-ho sort
• Fan, and then some
• Enthusiast, plus
• Dyed-in-the-wool partisan
• Fanatical enthusiast
• Zealous sort whose schedule may include 27-, 50- and 64-Across
• Extreme enthusiast