You can tell a lot about a comic book character by the kind of costume they wear. Capes, cowls, and color schemes all serve a purpose, and it's often more than just making the hero or villain look cool enough to warrant action figures. "Invincible" is a love letter to the whole genre of superhero comics in many ways, and as such, it pays tribute to many classic comic characters through its own costumes, like those for Darkwing (Lennie James), Red Rush (Michael Cudlitz), the various Guardians of the Globe, and Omni-Man (J. K. Simmons).

Invincible himself (Steven Yeun) gets a revamped look a few episodes into season 3, swapping out the yellow, black, and light blue for a simpler, starker outfit of dark blue and black only. Superhero costume designer extraordinaire Art Rosenbaum (Mark Hamill) gives the new suit to Mark after equipping his younger brother Oliver (Christian Convery) with...