well like in title say

none. period end of discussion. there is no class or master class for that matter that has no weakness strictly for the fact that the races themselves have weaknesses like saiyans have the lowest lp but highest ep in game, namek have highest lp but lowest ep in game, and majin is right in the middle. so, saiyans can deal a lot of damage, but cant take a lot, nameks can take a lot of damage, but dont deal as much as saiyans, and majins are balanced yes, but they are not strong in either lp or ep, they are just average

NOTE: this is generally speaking everyone so dont go "oh yeah? well my sk's gear gets me 18k ep!" or anything like that. this is if you maxed all 3 races and then compared them without any gear on.

what he say is right cause sk can run out alot of ep if hold the battle long enough and human can die quickly if didnt gear it properly

All that matters is gear really.

yes, but if you arent really sure about how the gear stuff works, i would go with a majin just for the sake of the fact that they have cheapest stuff and are always needed in a party for tmq or cc

dende dont have weaknes xDD

dende weakness is crit :p

all classes have the advantages and disadvantages of each. for me, fix your weakness. and the most important thing is hitrate, evade, LP.