Go to edit character and the names for 
the following codes...
BRAT     - Bobby
CYBERTW  - Tw Fan
DELVIS   - Biker Chip
ICE      - Robert
INSTYLE  - Cindy
SAFARI   - Traci
WILLI    - EA Gamer
GOLDDGR  - Festus The Ghost 
LILTIGER - Li'l Tiger (New Outfit) 
MARKO    - Li'l Mark (New Outfit) 
RAPPER   - Kimmi 
RETRO    - Starr 
TIGERRRR - Bengal (Striped Tiger) 
UFO      - Marvin The Alien