OC characters can exploit Negan's overconfidence by setting up traps that seem too obvious to be real. Since he underestimates them, he may fall for these simple - looking yet deadly traps. For example, an OC could leave a seemingly unguarded supply cache as bait, knowing that Negan would think it's an easy grab without realizing it's a setup.
To take advantage of his emotional vulnerability, an OC could research his past and find out what makes him tick. If they discover that a certain event in his past is a sore spot, they can use it against him. For instance, if they find out that a betrayal in his past makes him overly sensitive about loyalty, they can create situations where his own men seem to be turning on him, causing him to panic and make mistakes. Regarding his reliance on reputation, OC characters can simply not show fear. By standing up to him without flinching, they can make him doubt his own power and make hasty, ill - advised decisions.
If Negan's overconfidence is the target, an OC could play on it by feigning weakness or incompetence. Make him think they're an easy target, and then when he least expects it, strike back hard. For example, the OC could pretend to be a scared survivor begging for mercy, but then when Negan gets close, they use a hidden weapon to attack.
In OC (Original Character) fanfic, one of Negan's weaknesses could be his overconfidence. He often underestimates the capabilities of those around him, especially new or original characters that the writer creates. This can lead to him making tactical mistakes in confrontations.
If the Negan Queen has a psychological weakness such as a fear of a certain symbol or creature. The OC could incorporate that symbol or creature into their strategy. Maybe the Negan Queen is terrified of a particular kind of snake. The OC could release snakes in the area where they are about to face off, causing the Negan Queen to be distracted and make mistakes in combat.
One possible weakness could be her over - confidence. In a fanfic, if the Negan Queen is overly confident, it might lead her to underestimate her opponents. This could be exploited by the OC. For example, the OC could set up a seemingly easy trap that the Negan Queen, in her arrogance, would walk right into.
To exploit Barroth's weakness in Monster Hunter Stories, use water - based attacks. You can equip water - element weapons or use Monsties with water - type skills.
Use fire - based weapons or skills to target its weakness.
Use Thunder - element weapons to best exploit Tigerex's weakness.
Equip water or ice weapons and use attacks related to those elements.
Use Ice - based weapons and attacks.
Equip Ice - element weapons to exploit Rajang's weakness to Ice.