Quick Q on Bossk pilot ability- I'm unsure how to read it, so when in the combat sequence does it activate?

Is it:

1) Do I change a critical into two hits once I've rolled red dice BEFORE the defender rolls green dice?

or

2) Do I change a crit into two hits after green dice have been rolled (and the damage actually goes through)?

Thanks in advance.

2.

Bossk's ability demands that you hit with an attack, which is defined as having more [boom] and [kaboom] results remaining than evade results after the Compare Results step.

Than, during Deal Damage, before you actually assign the damage to the enemy, you remove one [kaboom] and add two [boom]s.

Sweet. Thanks for the clarification.

Bossk's ability demands that you hit with an attack, which is defined as having more [boom] and [kaboom] results remaining than evade results after the Compare Results step.

Quibble: an attack hits if, after canceling red dice with green dice, there are still one or more [boom] or [kaboom] results uncanceled. In most cases, this is equivalent to "there are more [boom]s and [kaboom]s than [zig]s", but not always. Ten Numb, Autoblaster, etc.