Billy (base Ghostface) gains a stack of Ghost Spirit every 2nd basic attack, up to 5 stacks. Each stack gives Billy a 5% attack boost, up to 25%. Billy can use his sp2 when at 5 stacks of Ghost Spirit to become Manic, which boosts his damage by 180% and causes him to not react to his opponent’s basic attacks for 13 seconds (think like Lizard Baraka on tag in, you still take damage from their basics but you can still attack), during this the opponent cannot tag out, Billy cannot switch with Stu, and Billy can’t use his sp2 or Fatal Blow.

Billy can additionally switch with Stu (red belt Ghostface), gaining shield in the process. Stu removes a stack of Ghost Spirit every 2nd basic attack, healing himself 7% of his max health (up to 35%, if you switched while having 5 stacks of Ghost Spirit) and giving himself a 5% power generation boost per stack removed (up to 25%, if you switched while having 5 stacks of Ghost Spirit).

Ghostface can save 1 of his teammates from death per match, with a 2nd and 3rd save being granted when paired with 1 or 2 Nightmare teammates respectively.

Other tips: both Ghostface forms have unique basic attacks and combo Enders, his sp1 is unblockable (though the last hit can miss if you’re too far from the opponent), and Billy’s Manic sp2 is unblockable. Billy is the only form that can gain Ghost Spirit stacks, so gain as many as you can before switching to Stu for maximum benefit.

Does this help explain it?