"Activate... Hero Shield!"
— Captain Hero, before grabbing a random civilian to absorb gunfire for him, despite being bulletproof himself, Drawn Together
Lesson 3: When using a human shield, grab a fat guy.
Gunfight in the morgue, rule one: Don't hide behind the thin guy.
— Frank Castle mentally chiding a mook doing so (while using a not-noticeably-thicker corpse for as a shield), Welcome Back, Frank