In general you can call such persons actors.
Actress Hi i just joined
An actor, or an actress.
producer
Actor
The motion picture 'One Missed Call' by director Eric Valette was released for theatrical release on January 4th 2008 for Canada and the United States.
gig
The "movin' picture box".
Sammy Hagar almost always wore red leather outfits onstage, especially as a solo performer.
Photo bomb
The motion picture 'One Missed Call' by director Eric Valette was released for theatrical release on January 4th 2008 for Canada and the United States.
Some screenwriters call them 'orphans'.
King Kong?
what do we call the energy motion
musician
The cast of Danmarks Indsamling 2008 - 2008 includes: Alex Ambrose as Himself - Performer Anders Blichfeldt as Himself - Performer Lars Brygmann as Himself - Call Center Lisbet Dahl as Herself - Call Center Anna David as Herself - Performer Tina Dickow as Herself - Performer Henrik Koefoed as Himself - Performer Simon Kvamm as Himself - Performer Marie Louise Wille as Herself - Call Center Niels Olsen as Himself - Performer Esben Pretzmann as Himself - Performer Asger Reher as Himself - Performer Manne Scheef as Familien Danmark, son Mads Steffensen as Himself - Host (Call Center) Anja Thordal as Herself - Host (Forum Horsens) Rune Tolsgaard as Himself - Performer Mette Walsted Vestergaard as Herself - Host
Someone who speaks dramatically could be referred to as melodramatic or theatrical.
A motion
The energy related to motion is called "kinetic energy".
There is typically an emcee who is the host and announces the performers on stage.
A Picture Framer
The energy of mass in motion is kinetic energy.