Con, The (Sony PSP)

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Boneyard(Arcade Mode)

Beat him and his team the final team in D rank.

Cinder(Arcade Mode)

Beat her and her team on the final team in A rank.

Items:

Some of Boneyard's Items buyable
Beat Boneyard's team in D ranks

Some of Smokes's Items buyable
Beat Smoke's Team in C ranks

Some of Shaman's Items buyable
Beat Shaman's team in B ranks

Some of Cinder's Items buyable
Beat Cinders 's team in A rank

KFJ

Defeat KFJ (Team Rogue) in Class B Story mode to unlock him.

Oso

Defeat Oso of Team Crunch (in the "S" rank league) to unlock him as a playable character in quick mode, and have his gear available for purchase.

Quick Play Characters

After you have done what is described below to unlock these characters, you can select them on the Fighter Select screen by moving the cursor to "Random" and pressing the Circle button to cycle through the ones you have available. These are only available in Quick Play modes.

Effect - Code

Hardcase - Defeat Arcade Mode (Any Difficulty)
Mask (Jeet Kune Do) - Defeat Arcade Mode on Hard Difficulty with a JKDer
Mask (Kickboxing) - Defeat Arcade Mode on Hard Difficulty with a Kickboxer
Mask (Street Boxing) - Defeat Arcade Mode on Hard Difficulty with a Street Boxer
Mask (Tae Kwon Do) - Defeat Arcade Mode on Hard Difficulty with a TKDer
Mask (Wrestling) - Defeat Arcade Mode on Hard Difficulty with a Wrestler
Reina - Complete Story Mode

Shaman(Arcade Mode)

Beat him and his team on the final team in B rank.

Smoke(Arcade Mode)

Beat him and his team on the final team in C rank.

Smoke(Story)

After beating Shaman and his team he will offer to join your team. On of your current members will go home and he will leave your team later on.