HI TONY it's Zoe! I should like, properly introduce my characters instead of just creeping on other people's comments. I have Grace Ahn, B52 medic (this journal); Reggie Salazar, Captain of the Tequila Sunrise (mezcal); and Hector Chasse, Kamikaze engineer (ironarmor). Of all my characters, Grace might get along with him best? She's definitely a professional worrier like him, around the same age, and mothers people. She's more of the "everyone gets a participation award!" type than the nitpicky type, oops, but she's the sort of person who keeps her personal space quiet and clean (she enforces calm and decorum!) so if he ever wanted quiet company, she'd be there for him!
Reggie is way more go-with-the-flow and chill and probably tries to encourage Colt to unwind, and Hector is wound up equally tight but would not take well to criticism. So they might get along but only if Colton hasn't turned his perfectionism on him.