Akame would have minor problems 'cause the Vex are machines, but she would still beat them easily Natsu could make it without problems too, especially if Solar burn is enabled Toriko would punch Atheon the cliff down with one Kugi Punch Kirito would die, there is no way he can avoid all the splash damage I want to add: Oga Tatsumi from Beelzebub, he would go into Super Milk Time and Zebul Emblem the whole Vault of Glass to dust Sakata Gintoki from Gintama, he would have a hard time but we know a Samurai especially Gin-san won't give up Shiba Tatsuya from Mahouka Koukou no Rettousei, one Demon Right and every boss would be dead or a Material Burst and the whole area would be destroyed too Oh and of course every character from Sengoku Basara wouldn't have problems at all ^^ I could continue the whole day but that's enough for now :P