Bonus characters
Hold L1 at the character selection screen and choose a character. The hidden characters may be combined to form new teams.

Classic Art of Fighting Team
Robert Garcia (King of Fighters ?94)
Ryo Sakazaki (King of Fighters ?94)
Yuri Sakazaki (King of Fighters ?94)

Real Bout Fatal Fury Team
Andy Bogard (Real Bout 2)
Joe Higashi (Real Bout 2)
Terry Bogard (Real Bout 2)

Orochi New Faces Team
Orochi Yashiro Nanakase
Orochi Shermie
Orochi Chris

Single Entrants
Kyo Kusanagi (King of Fighters ?94)
Mai Shiranui (Real Bout)
Billy Kane (Real Bout)
Omega Rugal

Challenge Shingo Yabuki
Satisfy any one of the following requirements to challenge Shingo:

Accumulate 100,000 points (or more) before knocking out the computer in round 3.

Accumulate 100,000 points (or more) before knocking out the computer in round 4. (Note: Round 4 KO must be Perfect).

Without losing a team member, defeat all CPU opponents from rounds 1 to 5.

Fight as Omega Rugal
Using Rugal, finish a one-player game at any difficulty. Save the game. Then load the saved game. At the character selection screen hold Start while selecting Rugal.

Select stage
At the Order Select screen, press Select.

Unlimited Survival mode
Highlight Survival mode option, then hold Start + Triangle and press Circle.