Bulk, surface area, and volume.
These create certain advantages and disadvantages, which a canny caped crusader will be aware of.
/1
The air will resist his movements, especially if the cape is allowed to billow around him.
This is how Batman glides from place to place: his cape generates drag, slowing him down significantly. /2
This is a Bad Thing.
Worse, the cape can be used against the hero. /3
This is a Very Bad Thing.
/4
When preparing for combat, he can wrap it around himself to hide his hands. He can draw a tool or chamber his hands or otherwise prepare for a pre-emptive attack without being spotted.
/5
As the bad guy rears back, the hero goes in with a gut punch or low kick.
He can also dramatically flare his cape in one direction, drawing away his enemy's gaze, then move in another direction to flank him.
/6
He can wrap it around his arm as a shield.
He can smother an enemy's limbs.
He can throw the cloak over the enemy's head to blind him, then finish him.
(This is an adaptation of historic cloak and dagger fighting) /7
He stalks his enemies from the shadows. He lets them see a huge, intimidating figure who vanishes into the night and reappears at will.
He swoops down, takes out an enemy, and disappears again. /8
He is swift, silent, elusive and decisive. Nobody sees him. Only the effects of his actions.
He is a ninja. /9
He will fight around the flanks and edges of a group of enemies, keeping his back to the wall, never letting anyone close enough to grab the cloak.
/10
They see a fluttering black shadow, they think he's over there, but their fists and feet and knives find only fabric and air.
And the Dark Knight punches them from an unexpected angle. Or deploys a tool to end the fight.
/11
If you design superheroes (like I do!) think about how their costume and design elements will influence their behaviour and tactics, and how their enemies will react to them.
And this has been Superhero Action Scenes 201 from #PulpRev.
/end