Controls (MLSS)

From Mario - Wiki on Neoseeker

Field controls:
A button-Perform action (front character)
B button-Perform action (rear character)
R button-Applies to front character

L button-Applies to rear character
Start-Switch Mario and Luigi back and forth or Switch which character you control when separated.
Select-Open the suite case
Control pad-Move Mario and Luigi

Battle controls:
A button performs Mario’s actions:
Select command
Select which enemy to attack

B button perform Luigis actions:
Select which enemy to attack
Select command