Gives you a lot of GELLA:
 800DE396 000F

Gives Jack 4095/4095 health:
 800DDFDC 0FFF
 800DDFDE 0FFF

Puts Jacks character level to 99:
 800DDFDA 0062

Gives Rudy 4095/4095 health:
 800DDFA8 0FFF
 800DDFAA 0FFF

Gives Rudy 4095/4095 Magic Points:
 800DDFE0 0FFF
 800DDFE2 0FFF

Puts Rudy's character level to 99:
 800DDFA6 0062

Gives Cecilia 4095/4095 health:
 800DE010 0FFF
 800DE012 0FFF

Gives Cecilia 4095/4095 magic points:
 800DE014 0FFF
 800DE016 0FFF

Puts Cecilia's character level to 99:
 800DE00E 0062

Gives you the Rollerskate tool:
 800DE008 0002

Gives you the Boxing glove tool:
 800DE008 0003

NOTE:You can only have 3 tools at one time!