There are no Monferno in the wild, so there are two ways to acquire one: at the beginning of the game select Chimchar as your starter Pokemon and evolve it starting at level 14. You could also trade for one on the Global Trade Station in Jubilife City or trade for one with someone locally.
Chat with our AI personalities
nowhere,but you can get one from professor rowan
You must breed a Monferno or Infernape with a Pokemon to get the chimchar egg.
neither of them is better, they are both the same, but in diamond, you catch dialga, and in pearl, you catch palkia, and you can catch different Pokemon in each game for example: you can catch this Pokemon in diamond, but not pearl but: you can catch this different Pokemon in pearl, but not diamond
You can catch makuhita in the fighting area in Pokemon diamond
You can use Feint (if you have diamond/pearl/platinum, monferno learns it).