U is for Uniform.
Chris Fairborne AKA Crimsonstreak is pretty particular about his...attire. I'd call it a costume, except Crimsonstreak would zip over to my house, slap me in the back of the head, and then be gone before I ever saw him.
Our hero doesn't do costumes. You see, costumes are for High Imperators and Enforcers, maybe the occasional supervillain. Superheroes aren't exactly your hardhat and lunch pail crowd, but Crimsonstreak views saving the world as a job. Any respectable hero sees the world this way, and someone with a job doesn't wear a costume. They wear a uniform.
Don't call it a costume. You've been warned.
BACK TO CRIMSONSTREAK CENTRAL!
