How do you get Pokemon join your team in Pokemon mystery blue dungoen?
Ah good question. It's very simple. If you have their 'friend area', which you can buy from the Wigglytuff, then after fighting them it will say something like '[Pokemon's name] wants to join your team' and it will give you the chance to say yes or no. And if the Pokemon doesn't die, or you don't die, it will go to it's friend area. Then you can allow them to join your team whenever.