Related Clues:

• No bystander
• Idler's antithesis
• Industrious one
• One acting
• Active type
• Human dynamo
• One who more than just talks
• One of action
• Evil follower?
• She's busy
• Hardly a slacker
• One with many accomplishments
• Slacker's opposite
• Couch potato's antithesis
• One who takes action