King Of Fighters: NeoWave
In order to unlock hidden characters and all the pictures in Gallery mode, go to the Endless (Survival) mode, then reach and defeat Geese Howard. The game will continue after Geese's defeat, but it is not necessary to continue fighting after him. Then, go to any mode, highlight one of the following characters and hold R1 to use his or her respective hidden character:
| Normal character | Hidden character |
| Kyo Kusanagi | Kyo Kusanagi (King 94 version) |
| Whip | Vanessa |
| Chang | May Lee |
| Kula Diamond | Angel |
| Shingo Yabuki | Seth |
| Saishyu Kusanagi | Omega Rugal |
Note: The following hidden characters are already unlocked:
| Normal character | Hidden character |
| K' | Geese Howard |
| Maxima | Ramon |
| Yashiro Nanakase | Yashiro Nanakase (Orochi version) |
| Shermie | Shermie (Orochi version) |
| Chris | Chris (Orochi version) |
| Jhun | Kim Kaphwan |
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