These codes will allow you to get any character in any level via the action replay cheat software. Make sure only one of these codes is turned on at once. Select a level from the stage select map, and as the map begins to fade out, Hold Up (JUST UP) on the Dpad. As soon as the loading screen appears, you can let go of the Up arrow. You'll get the level you entered the code for, with the character whose level you selected on the map.
TEST LEVEL
BPMU-HT2R-X7BA2
Q95B-WV0J-10V85
H2E9-MAE2-U5PEE
Green Forest
TPUF-NETV-Z6P7Z
Q95B-WV0J-10V85
8MG2-GPMY-AXYW3
White Jungle
4JGT-JCW3-MZ3KC
Q95B-WV0J-10V85
3WP3-UPAB-4W3V4
Pumpkin Hill
C84H-33KP-331BY
Q95B-WV0J-10V85
3AGR-G0A5-49JHZ
Sky Rail
ZY6Y-C3CF-NCUZ6
Q95B-WV0J-10V85
J7NZ-82D7-9BTP9
Aquatic Mine
7W4K-FZEX-Z91ZU
Q95B-WV0J-10V85
1AU4-GJY8-HTB07
Security Hall
8J1B-5NWV-8QZ23
Q95B-WV0J-10V85
KPGT-KE15-WREXZ
Prison Lane
4CQJ-ZG84-2B6E0
Q95B-WV0J-10V85
9CMQ-RXU3-HY7D2
Metal Harbor
BVH1-6BQG-N6RJG
Q95B-WV0J-10V85
R38V-MG8W-U4QQJ
Iron Gate
23NV-GEXA-73KTW
Q95B-WV0J-10V85
DFF9-UG7E-RVY15
Weapons Bed
TYT4-JJWN-EDE5H
Q95B-WV0J-10V85
0MTF-H4G9-4FFAM
City Escape
7N0F-R160-4C0G1
Q95B-WV0J-10V85
UR1C-1JTD-BZW00
Radical Highway
DEJK-281F-9M2DC
Q95B-WV0J-10V85
DYUH-V4DH-TD1BR
2 Player - Weapons Bed Area
4NP9-5D58-U2C1V
Q95B-WV0J-10V85
795E-TAY9-J6K0A
Wild Canyon
Y6CN-RFQQ-B5JKN
Q95B-WV0J-10V85
ERMC-2W15-N4BEQ
Mission Street
N2ZW-Z61Z-2TBH5
Q95B-WV0J-10V85
H5AJ-NMWG-F4Q0M
Dry Lagoon
CP25-7JXE-2DU6G
Q95B-WV0J-10V85
52DJ-AJYZ-VE9XF
Boss: Sonic vs Shadow at Green Forest
R8W2-6BHV-VFW8R
Q95B-WV0J-10V85
R361-7P9Q-54GME
Boss: Tails vs Eggman at Weapons Bed
0H2K-Z18F-40D9Z
Q95B-WV0J-10V85
07FD-FPEP-5NJM6
Sand Ocean
2XQ4-JKU8-AV6TC
Q95B-WV0J-10V85
W7QY-KNH8-V3MFB
Crazy Gadget
5ZB6-TAZY-28CW7
Q95B-WV0J-10V85
ACF6-YMFD-ZD1PU
Hidden Base
CUVK-GKHN-DG4NZ
Q95B-WV0J-10V85
4CW9-D0PE-6ZQB4
Eternal Engine
BCJK-R8D2-0ZF2D
Q95B-WV0J-10V85
YQD5-1Z80-GG9UU
Death Chamber
NRZ4-VF2Q-QTZDZ
Q95B-WV0J-10V85
254B-XCH2-PBRWG
Egg Quarters
Z47Z-VGYF-QCQUM
Q95B-WV0J-10V85
Z96T-8FFE-1B2WY
Lost Colony
2FJK-N63C-AR86H
Q95B-WV0J-10V85
8919-KK8K-29UYX
Pyramid Cave
PNWY-YA7D-BX3PP
Q95B-WV0J-10V85
73XV-75CE-NWTJX
Boss: Tails vs Eggman at the Ark
ZC09-F7QN-ENW78
Q95B-WV0J-10V85
P4PN-FQ5F-BATV9
Final Rush
6385-N487-30AP5
Q95B-WV0J-10V85
WBCC-5W3E-P6HUX
Green Hill
61U2-DJYN-GT1CA
Q95B-WV0J-10V85
12GW-ACP5-M54KN
Meteor Herd
A8Y2-A8TW-2MKTM
Q95B-WV0J-10V85
0BEX-HAJE-TT0VD
Boss - Rouge vs. Knuckles at Meteor Herd
1XM2-KPMA-PNMRX
Q95B-WV0J-10V85
DEUC-D4KQ-ER2Y5
Cannon's Core - Sonic
9RNZ-QNXP-73QPJ
Q95B-WV0J-10V85
BPNG-49B8-VN2H4
Cannon's Core - Eggman
4N1A-6NZM-KMJ1G
Q95B-WV0J-10V85
RUTW-V1XJ-FBUMC
Cannon's Core - Tails
GTUP-QVYX-U1ZCW
Q95B-WV0J-10V85
RZPM-PFGD-NF2G6
Cannon's Core - Rouge
W5Z4-9G8V-76518
Q95B-WV0J-10V85
AKBY-MCJ6-AQ229
Cannon's Core - Knuckles
CKYD-B11Y-19CD4
Q95B-WV0J-10V85
5YKT-QXRG-ZRF88
2 Player Battle - Mission Street
YP2X-PJCG-55QC0
Q95B-WV0J-10V85
ZQ87-2VFY-NZYQ9
Final Chase
5HX0-0AA5-FWRYU
Q95B-WV0J-10V85
VGZ9-WYZD-EP1QV
Boss: Sonic vs Shadow at Ark Runway
9MK6-G2R9-6351Y
Q95B-WV0J-10V85
9AH5-WWD5-AJGPB
Cosmic Wall
CJ7W-8XEA-EKWX8
Q95B-WV0J-10V85
7HRW-WXBQ-BYV1X
Mad Space
3C49-GC9C-0TUGN
Q95B-WV0J-10V85
RRR4-7N6Y-2BC8X
2 Player - Ark
X4KV-6R6K-54CET
Q95B-WV0J-10V85
8KJU-FDPJ-M0J31
Mini Stage - Grind Race *Crash*
GK9B-WCBN-1Y4AC
Q95B-WV0J-10V85
0KRD-DZKK-D83DP
2 Player - Lost Colony
YJ41-V2AP-R6Z7M
Q95B-WV0J-10V85
9W35-70VF-C7AUM
2 Player - Ark
FH3V-EFTV-5EJRB
Q95B-WV0J-10V85
6TVD-K1PB-WCZAY
Route 101 (And Route 280...)
FAAB-ACF6-NEQ70
Q95B-WV0J-10V85
U2J5-2A11-ZJAAF
Kart Racing
Q50H-BRQ1-X271N
Q95B-WV0J-10V85
7H95-JT8Z-BVJ1H
Chao World
T578-G6ZX-X08W8
Q95B-WV0J-10V85
TBYE-9V2D-6TANB
Mini Stage - Pyramid Race
M5E3-AZ4Q-CEJK1
Q95B-WV0J-10V85
UH0E-PMV1-HFHEN
2 Player - Sand Ocean
1GRU-Q6VE-38YJW
Q95B-WV0J-10V85
YJHB-RV4N-5FMYU
Mini Stage - Pool Quest
A55E-QTMY-G3AVB
Q95B-WV0J-10V85
5CDE-FVD6-DVBBJ
Mini Stage - Planet Quest
4RZ0-9NBQ-VAH0X
Q95B-WV0J-10V85
PBMZ-Y959-D2G35
Mini Stage - Deck Race
MAR5-UXJV-HZ3F0
Q95B-WV0J-10V85
KR95-DRB7-VAQMQ
Mini Stage - Downtown Race
98H1-BYX2-W6A52
Q95B-WV0J-10V85
9B8Y-91EY-7KYVM
2 Player - Metal Harbor
WV1C-60Y2-MDY11
Q95B-WV0J-10V85
NR6M-6WYE-4UG0Y
2 Player - GUN Area(?)
H3GF-BJ5U-RE13E
Q95B-WV0J-10V85
N0XK-UX2P-VNYVC
2 Player - Death Chamber
T6TR-KEZB-MN4Q0
Q95B-WV0J-10V85
80G8-8MB8-T8ZE0
Boss - Big Foot
2XF8-84GD-NZU2Y
Q95B-WV0J-10V85
168H-AV0N-CUUV2
Boss - Hot Shot
BH41-177J-D2J47
Q95B-WV0J-10V85
XC3Z-QVAR-WNN5R
Boss - Flying Dog
E4QD-A5AD-544BT
Q95B-WV0J-10V85
XX17-A14H-0X92Z
Boss - King Boom Boo
0JE9-MWU1-YZHGF
Q95B-WV0J-10V85
VZU6-8MFV-AZB9U
Boss - Egg Golem
769W-5A6Q-0NPM0
Q95B-WV0J-10V85
1H31-1YH5-DYW91
Boss - Biolizard
2P0P-3AKA-5RAZG
Q95B-WV0J-10V85
K511-ETKH-JCKPJ
Boss - FinalHazard
JZ1R-QBF5-B7CX2
Q95B-WV0J-10V85
E313-RQD3-464KV
Special thanks goes to Sonicblur for spending the time researching these codes, and Sonic Hackr 2000 for encoding them.