which help koma is best to use?

im up to the battle tower but im trying to atleast go through the ones that unlock characters. im on tower 7 and its annoying with the enemies running around and useing the african guy and the tornado. time limit is also very low and i cant even damage them enough without throwing them out of the arena. the only help komas im used to is hitsugaya ise dragon beam and that 1 help koma from hakusho that has the guy in blue running around with 2 swords.any advice on how to deal with this mission? i need to just take out 2 enemies with help komas.