QIf this follower's On Super-Evolve ability is pending, but another ability reduces its defense to 0 first, can I play its On Super-Evolve ability to change its defense to 7?

ANo. If another ability reduces this follower's defense to 0, confirmation timing would occur after that ability is resolved, and this follower would be destroyed. Although you would resolve its On Super-Evolve ability afterward, it would no longer be on the field to have its defense modified.

QIf this follower's defense is reduced to 0 by its own On Super-Evolve ability, is it destroyed?

ANo. The next part of the ability would change its defense to 7 before the next confirmation timing, so it would not be destroyed.

QIf this follower's defense is reduced to 0 by ability damage during my turn, will its "Once on each of your turns, when this takes ability damage" ability trigger?

AYes. The ability will trigger before the card is destroyed.

QWhat is ability damage?

AAbility damage is all damage except for damage dealt by two followers in combat or by a follower attacking a leader. Damage from Strike abilities, although triggered by an attack, is considered ability damage.

QIf I super-evolve a follower with an On Evolve and On Super-Evolve ability, can I choose the order in which I resolve them?

AYes, you can.

QIf I super-evolve a follower with an On Evolve ability, does it trigger?

AYes. Both its On Super-Evolve and On Evolve abilities will trigger.