Richie, one question.
Is Mona an original character?
Now for my comment. I think I'm starting to see a pattern here. I'll bet that everything that has happened so far has been a conspiracy that goes all the way back to the movie. We all know that Liquid and the Darkness were working together, but then I thought, "What did the Darkness need Liquid for?" Two words. Plan B. When Liquid found out that Wario had "killed" the Darkness, he executed the first part of their plan. Faking his death. Second, the Darkness initiated his part of the plan. Infusing his hat with a part of his essence and making Ness sense it. When the Darkness psychically compelled Ness to put on the hat, that essense was transferred to him, allowing the Darkness to partially possess him. The Darkness didn't control Ness's body, but just implanted thoughts in his head and giving him the desire to act on them. When Ness led Snake to the cave, the next part of the plan began, disempowering Mario and his friends. Also, the Darkness created the illusion of Merlin for Wario so that he would gather the others at the cave. I know this because if it was the real Merlin, he would have known what the Beacon really was and told Wario. Now, whether it was my mind trick theory, or something else, I don't know, but the point is they were now vulnerable. Next, Liquid would remain undercover and wait until the next time Snake would recieve his FOXDIE cure. Liquid knew that without their powers, the only one of them left who would be a serious threat to him would be Snake, so he secretly swapped the real chocolates for ones containing poison. Also, he inconspicuously revealed himself to Snake at Starbucks, knowing that he would be motivated to try and get everyone's powers back, which Liquid wanted them to do for some reason. As for the poison, Liquid's plan was hindered by Mario, who stole it for Pauline. Liquid still had all his bases covered though. Since both the FOXDIE chocolates and the poison chocolates are lethal to ordinary people, they would have never known it was poison. Also, Snake became old and less of a threat, and would eventually die, so reducing Snake's threat level, and Liquid maintaing the secrecy of his plan were both taken care of. However, they (however some of them reluctantly) agreed that they would need Mario's help to get their powers back, so after Mario refused to help, Liquid knew he would have to escalate matters. So, with the information gathered by the ninjas spying on them, he and his associates launched sneak attacks on them. Then, Mario would realize that he had no other choice but to help try to get their powers back.
Dawn = Original Character
Mona = Wario's Girlfriend from the Warioware games.