One holding the cards, on a set
Else clues• Actor prompter
• Aide in the wings
• He gives you prompt attention
• He may feed you a line
• Line feeder
• Line provider
• Move caller for a round dance
• Off-camera card-holder
• One calling the moves for a round dance
• One holding a card, perhaps
• One in a prompt box
• One who prompts
• One who waves from the wings
• Person with a mike at a round dance
• Prompt giver
• Prompt provider
• Prompter
• Round dance leader
• Round dance official
• Signal caller
• Signal giver
• Square dance official
• Stage aide
• Stage assistant
• Stage coach
• TelePrompTer, e.g.