I like Virginia's suggestion for Rob's costume.

How about this -

Rob's cape is a mottled black and gray simulating storm clouds which continue to his shoulders and the lightning bolts comes from the cloud on his left shoulder. Where the bolt originates he has a dimunuitive 'S' crest in the lightning bolt.

Angel has angel wings flanking her 'S' crest and a faint lightning bolt over the 'S'.

Herb replied, “My boy, I never say … impossible.” "Lois and Clarks"

My stories can be found here

kj