"Hi, I'm Gutsy, and this is my annoying sister, Char.""You're doing it all wrong. It's like this: Hi, I'm the smart and talented Char, and this is my boobheaded little bother, Gutsy."
"Little?! Hey, crapface, I'm taller than you!"
"Yeah, by five centimeters! Anyway, duncebrain, I'm older than you!"
"Yeah, by five minutes, earwanker!"
"Fartface!"
"Garbagebreath!"
Okay, let's stop there before they go through the entire alphabet.
Gutsy and Char are the only wights on the Black Pike. They're twins, though Char is a few minutes older, which she thinks gives her the right to boss her brother around.
Neither twin could be said to be a genius, though of the two Char is probably the smarter one. She's assertive and collected, though will occasionally lose her temper when Gutsy argues too much -- and Gutsy will often accuse her of being too uptight.
Gutsy, by contrast, is more impulsive, has less self-control and is less inclined to speak before he thinks. He doesn't take well to being bossed around by his sister and frequently lets her know it. The result is that they're constantly bickering -- though woe be to the outsider who insults either one of them, because then they'll immediately gang up on said person to avenge the insult. As such, the entire crew of the Black Pike have learned to just let them get on with their bickering, long as it doesn't hinder them in doing their jobs.
For all their arguing, though, they are quite an efficient and competent team when they have to be.