Anime Characters Who Can Challenge Saitama

Saitama the protagonist of the anime one punch man, the character who made a name for him self that can beat every one with a single punch, of cores the fan's of the manga and the hero will say that he can beat every one in the other animes, so we made a small list of characters who can win against him:
Kurosaki Ichigo

Even if ichigo don't seems to have to have a chance against saitama i will say you can't be so sure about this, because what we learned of ichigo that he never ever give up + with his hollow form and the hollow ichigo the quincy power and more he can give saitama a really hard time, like we say guetsuga tensho means fuck everything in this direction.

Sosuke Aizen

Aizen is feared in his own series and even in other series, he is also ranked to be the villain of villain's, and with his many and many kido's i can say that he can beat saitama even without a zampakto

Monkey D. Luffy

With monkey D.luffy saitama will have a real fight punch VS punch with the same speed and power.

Madara Uchiha

The thing that saitama does not have and need is techniques, lets not go speaking about powers and stuff, technique is the real problem of saitama, even with one punch you can't do shite if you can't touch him, and against madara you really can't approach.

Son goku

Even if you don't like it you just have to deal with it, goku is goku shit XD no more seriously, goku is the most powerful character ever and every one can say it, he have the skill power and techniques, and if saitama is the one punch men goku is the one-inch punch men.

Alucard

Last but not the least Alucard from the anime healsing this character is well knewen in the anime world, alucard is considered to be the number one contender to son goku of dragon ball Z with his immortality even if he is shatred in pieces he can't die so explain me how the hell will saitama kill him.