Joker

Joker is a combat Wizard and a member of the Dealers. Though has no known EM Wave Change, Joker is shown to be nearly invulnerable to Noise because of the Joker Program that the Dealers developed. He is also able to use the program in order to Finalize and become Dread Joker, a very powerful EM Being who fights with brute strength.

Game History
Joker plays a more subtle role throughout the events of MegaMan Star Force 3. He is often seen performing Dealers' more clandestine operations. He is also the one at Alohaha who fragments Luna Platz and scatters her data, forcing Geo Stelar, Omega-Xis, and Acid to work together to recover her.

Though Joker often avoids fighting MegaMan by distracting him and fleeing, the two eventually face off at the Dealers' secret Crimson Factory. After his defeat, Joker attempts to take MegaMan and his friends with him by self-destructing. His attempt, however, fails as Acid Ace sacrifices himself to neutralize the explosion, scattering heavy amounts of Crimson nearby.

Name
Joker is named after the playing card of the same name, in reference to being a part of the Dealers.

Trivia

 * The joker card is not a part of a standard deck of playing cards, which symbolicly contradicts that he is the only member of the Dealers who remains loyal to Mr. King.