Invincibility
In the training gym on Controller 2 press A, on Controller 1 press A, Select, A, on Controller 2 press B, on Controller 1 press Select, on Controller 2 press A and B simultaneously, and on Controller 1 press B twice for invincibility.
In the training gym on Controller 2 press A, on Controller 1 press A, Select, A, on Controller 2 press B, on Controller 1 press Select, on Controller 2 press A and B simultaneously, and on Controller 1 press B twice for invincibility.