It's interesting because I've rarely seen a story that puts those two characters in a room and really digs into their specific dynamic. Their conflicts feel so internal—Zane's calculated precision versus Travis's raw, chaotic intensity. A crossover that nailed this for me was one set in the 'The Witcher' universe. The author had Zane as a sorcerer and Travis as a mutated witcher, forced into a grudging partnership. The central tension wasn't just about fighting monsters; it was Zane's obsessive need for control clashing with Travis's self-destructive, almost feral instincts for survival. The story spent chapters on them just trying to understand each other's methods, which highlighted their contrasting philosophies beautifully.
I think the best explorations come from crossovers that provide a high-stakes, morally grey environment. A 'Dishonored' AU, for instance, pits Zane's potential for cold, political manipulation against Travis's unpredictable, vengeance-driven violence. That setting's emphasis on consequence and choice forces their conflicting worldviews into sharp relief. Those stories linger because they don't force a quick resolution; they let the conflict simmer, making any eventual understanding or collaboration feel earned, not just convenient for the plot.