Joker is the main villain from Emelia's storyline in SaGa Frontier. Joker is a strange masked individual, whom Emelia witnessed murdering her boyfriend Ren. Emelia, however, ended framed for the crime and imprisoned. After escaping, she joins Gradius, a secret police force made by ex-criminals, and chases Joker to learn his motives. She learns Joker was working with Trinity, as they were searching for Cube, a mysterious power source.

When the current leader of Trinity is overthrown by Mondo, he sends Joker to Yorkland, telling him Cube was located there. Mondo lets Emelia infiltrate his base, and tells her he made a set-up for Joker, as he needed Gradius to get rid of him, as he was becoming a nuisance for Trinity. Emelia finally confronts Joker in Yorkland's church, where she points her gun to him, while he threatens her to give Cube to him.

Just then Emelia hears her boyfriend Ren's voice, telling her to shoot the mask. As it turned out, Joker was actually Ren, who got possessed by a mask while investigating Cube. Emelia hesitates, but as Joker gets near she shoots him, taking off the mask and destroying it, thus freeing Ren from the possession.

           SaGa Villains

Makai Toushi SaGa
Holy Fiends - Ashura - The Creator
SaGa 2
Rhino - Ashura - Phagoycte - Dunatis - Ninja - Venus - Echigoya - Sho-gun - Magnate - Apollo - Arsenal
SaGa 3
Lara - Dogra - Dahak - Fenrir - Jorgandr - Maitreya - Chaos - Guha - WaterHag - Agron - Ballor - Water Entity - Xagor
Romancing SaGa
Saiva - Cornelio - Lord Harun - Butcher - Ewei - Ifrit - Jewel Beast - Soulgutter - Minions - Saruin
Romancing SaGa 2
Cyfreet - Garon - The Sorceror - Hive Queen - Seven Heroes (Wagnas - Kzinssie - Noel - Rocbouquet - Bokhohn - Dantarg - Subier)
Romancing SaGa 3
Devil King - Godwin - Rats - Dophore - Maximus - Nacht Zweiger - Tao Gao - Abyss Lords - The Destroyer
SaGa Frontier
Ciato - Rastaban - Orlouge - Genocide Heart - Hell's Lord - Black X (Shuzer - Berva - Cindy Campbell - Metal Black - Dr. Klein) - Joker - Mondo
SaGa Frontier 2
Alexei Sergein - Megalith Beast - Cantal - Nicolette Drangueforde - Misty - Sargon - Fake Gustave - Egg
Unlimited Saga
Clyde Blackstorm - Dagul Bos - Basil Galeos - Jeanne Maure - Kalandorn Alovi - Leon Burgundy - Yun Crimsonrain - Knights of the Round Table (Phantom) - Chaos

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