-----Release version (22nd March)-----

3266ADDC (2 bytes) - 1P / Leon character
3266AE4C (2 bytes) - 2P / Helena character
3266AEBC (2 bytes) - 3P / Chris character
3266AF2C (2 bytes) - 4P / Piers character
3266AF9C (2 bytes) - 5P / Jake character
3266B00C (2 bytes) - 6P / Sherry character
3266B07C (2 bytes) - 7P / Ada character
3266B0EC (2 bytes) - 8P / Agent character

Above values define which character/outfit is being used. For mercs and extra modes, 1P is always 1P and etc. For story mode, which value corresponds to a specific character (1P is always Leon, no matter what chapter you play and no matter who's hosting.

List of characters and their outfits:

0000 (Leon USA)
0001 (Leon Asia)
0010 (Leon Costume 1)
0011 (Leon Costume 2)
0012 (Leon Retro)

0100 (Helena USA)
0101 (Helena Asia)
0102 (Helena carrying Deborah)
0110 (Helena Costume 1)
0111 (Helena Costume 2)
0112 (Helena Retro)

0200 (Chris Asia)
0201 (Chris Europe)
0210 (Chris Costume 1)
0211 (Chris Costume 2)
0212 (Chris Retro)
(Chris Bad)

0300 (Piers Asia?)
0301 (Piers Europe?)
0303 (Piers Canon)
0310 (Piers Costume 1)
0311 (Piers Costume 2)
0312 (Piers Retro)
(Piers Personal)

0400 (Jake Europe)
0401 (Jake Monitor)
0402 (Jake Asia)
0403 (Jake Snow)
0410 (Jake Costume 1)
0411 (Jake Costume 2)
0412 (Jake Retro)

0500 (Sherry Europe)
0501 (Sherry Monitor)
0502 (Sherry China)
0503 (Sherry Snow)
0510 (Sherry Costume 1)
0511 (Sherry Costume 2)
0512 (Sherry Retro)

0600 (Ada normal)
0602 (Carla)
0610 (Ada Costume 1)
0611 (Ada Costume 2)
0612 (Ada Retro)

0700 (Agent)
0702 (BSAA Rookie)

08 4E (3P during agent hunt on leon 2-2)

Information beyond the character value is the inventory for that character (changes should take affect after restarting checkpoint). Changing character/outfit takes change after restarting checkpoint (might have to be frozen).

326238C4 (4 bytes) - On consoles this has be to turned to 1 to make splitscreen work correctly. Seems to have no effect on PC version.
326238C8 (4 bytes) - Screen mode. 0=normal, 1=splitscreen, 2=wide-widescreen?, 3=cutscene?, 5=partner view?
326238CC (4 bytes) - 1P screen. Which player the first screen is following.
326238D0 (4 bytes) - 2P screen. Which player the second screen is following.

32628120 (4 bytes) - SE volume (range from 0 to 100)
3262811C (4 bytes) - Music volume
32628124 (4 bytes) - Voice volume

32669304 (4 bytes) - Stage. Game automatically changes this when when ending levels, choosing continue, choosing chapter select, or starting a mercs match.

3262360C (4 bytes) - 1P control (0=local, 1=AI, 2=online). Needs to restart checkpoint for change to take effect.
32623610 (4 bytes) - 2P control

3262362C (4 bytes) - 1P local controller (which local input device has control over this character)
32623630 (4 bytes) - 2P local controller

3262878C (4 bytes) - Skill points amount

32628800 (4 bytes) - First skill in first skill set for Campaign
326289A8 (4 bytes) - First skill in first skill set for Mercenaries (and No Mercy)

326230A0 (4 bytes) - Play game menu (0=campaign, 1=dog tags, 2=extra content)
326230A8 (4 bytes) - Extra content menu (0=agent hunt, 1=mercs, 2=mercs no mercy, 3=survivors, 4=onslaught, 5=predator, 6=siege, 7=nothing)
326230B0 (4 bytes) - Mercs menu

If you click on mercenaries, then change Extra Content menu selection to something else, and then click on solo, you'll get the screen for setting up server.

32626EA4 (4 bytes) - Solo/duo. 0 = campaign splitscreen, campaign offline, or mercs solo, 1 = online enable or mercs online, 2= mercs splitscreen

325E1BDC (4 bytes) - In hosting lobby or not. Seems to be 1 while in the campaign hosting lobby, and 0 while in other menus.

32623158 (4 bytes) - Attack reaction. 0=on, 1=off (only affects campaign mode)

32623650 (4 bytes) - Friendly fire. 0=off, 1=on (this lets players hurt eachother) (only affects extra content modes)

326278C4 (4 bytes) - Mercenaries timer (default is 1123024896 which equals 2 minutes)

32623748 (4 bytes) - Agent Hunt - Spawn location num (I found this by searching for the starting spawn locations in leon 2-2. it goes from 0 to 4. 3 or 4 is the dog house)

326237EC (4 bytes) - Agent Hunt - Spawn type num

One of these define which campaign you're currently playing:
319A0290
325E3568
3261E404
32623114
32667800
326692F0
3267EF9C