Our software update is now concluded. You will need to reset your password to log in. In order to do this, you will have to click "Log in" in the top right corner and then "Forgot your password?".
Welcome to PokéCommunity! Register now and join one of the best fan communities on the 'net to talk Pokémon and more! We are not affiliated with The Pokémon Company or Nintendo.
Marx Soul is pretty easy to me. Sometimes I go to the True Arena just to fight him (and hear his death scream!). I've fought him and regular Marx so many times, that I can now predict most of his attacks.
Hardest one to me would probably be the Wham Bam Jewel. Not exactly hard "I keep losing on it" hard, but "hard to hit" and "has a ton of health" hard. I try my best to keep my hammer ability until I fight it so I can use the Up-B move, which deals a bunch of damage.