These are all the mantises placed into their role. Both Mantera and Gravedigger would be fit as fighters, the first due to her size and the latter due to his incredibly violent nature. Gator would be that one guy who needs help all the time because he is canonically still a kid, the equivalent of a 9-year-old for mantiraptors (they mature at 3, and the oldest a microraptor could potentially live to is 15). Mantis, being the smartest of the group, would likely be able to work with Teevs as a tech kid, and Spino is the dumbest of them all.