Superman.

 No.  Code  Effect
   1  BVPA-AA48  Infinite power
   2  BDFA-AA2R  Infinite continue credits
   3  AJ2A-AACC  Start with 1 continue credit
   4  AY2A-AACC  Start with 4 continue credits
   5  A62A-AACC  Start with 6 continue credits
   6  BJ2A-AACC  Start with 9 continue credits
   7  B62A-AACC  Start with 15 continue credits
   8  CT2A-AACC  Start with 19 continue credits
Don't combine Codes 9 Thru 16 with Code 3
With Codes 9, 11, 13 AND 16, you will lose a life before being allowed to start the game.
   9  AE2A-AAB4  Start in middle of Stage 1
 10  AJ2A-AAB4  Start on Stage 2
 11  AN2A-AAB4  Start in middle of Stage 2
 12  AT2A-AAB4  Start on Stage 3
 13  AY2A-AAB4  Start in middle of Stage 3
 14  A22A-AAB4  Start on Stage 4
 15  A62A-AAB4  Start on Stage 5
 16  BJ2A-AAB4  Start in middle of Stage 5
 17  AJ9A-AACY  Regain sonic punch & hyperspin energy 1/4x as fast
 18  AY9A-AACY  Regain sonic punch & hyperspin energy 1/2x as fast
 19  A69A-AACY  Regain sonic punch & hyperspin energy 3/4x as fast
 20  B29A-AACY  Regain sonic punch & hyperspin energy 1-1/2x as fast  
 21  CJ9A-AACY  Regain sonic punch & hyperspin energy 2x as fast
 22  DN9A-AACY  Regain sonic punch & hyperspin energy 3x as fast
 23  FY9A-AACY  Regain sonic punch & hyperspin energy 5x as fast
 24  MJ9A-AACY  Regain sonic punch and hyperspin energy 10x as fast
Codes 25 Thru 32 Only work on up-scrolling scenes.
 25  AZ5T-AAFJ  Regain heat vision energy 1/4x as fast as normal
 26  BF5T-AAFJ  Regain heat vision energy 1/2x as fast as normal
 27  B35T-AAFJ  Regain heat vision energy 3/4x as fast as normal
 28  DP5T-AAFJ  Regain heat vision energy 1 1/2x as fast as normal
 29  EV5T-AAFJ  Regain heat vision energy 2x as fast as normal
 30  G35T-AAFJ  Regain heat vision energy 3x as fast as normal
 31  MK5T-AAFJ  Regain heat vision energy 5x as fast as normal
 32  0V5T-AAFJ  Regain heat vision energy 10x as fast as normal
 33  AWBA-AA4C  Infinite sonic punch energy after charge-up
 34  AA9A-AACY + ABWT-AAA0    Start without sonic punch
 35  ACCA-AAAW  Infinite hyperspin energy after charge-up
 36  AV7A-AA9E + AB7T-AAAE
 + RF5T-A61N
 Infinite heat vision energy after charge-up
 37  AB5T-AAFJ  Play without heat vision energy recharge
Codes 38 Thru 42 affect regular jumps only, Not Super jumps or Running jumps.
 38  ABCA-B55Y  Jump 1/2x high as normal on regular jumps
 39  ABCA-B15Y  Jump 3/4x high as normal on regular jumps
 40  ABCA-BS5Y  Jump 1-1/2x high as normal on regular jumps
 41  ABCA-BK5Y  Jump 2x high as normal on regular jumps
 42  ABCA-A75Y  Jump 3x high as normal on regular jumps