To battle the boss Genbu you must be at least level 15. If you want another ten Karma on top of the ten for beating it which will give you a grand total of twenty Karma, beat it with food item's only: Negi, Fried Shrimp, Chicken. It will be a lot harder with food only item's though, beware the Genbu is very tough!
To fight 'Genbu' in Ninja Warz you must be Level 15, and also you must have strong ninjas and weapons. 'Genbu' is a tortuise from the north, he is one of the bosses along with other ones. ------------------ uBradz
You can only fight Genbu when you are level 15 on Ninja Warz, also I recommend you to have atleast two black belts and strong weaponry. ----------- uBradz
To fight Mencha-Genbu in Ninja Warz you have to be Level 35+ and I would recommend you to have very, very strong weaponary and at least 10 black belted ninjas. ---------- DanielValle2222
Lv 35 to fight mecha genbu and i know a cheat if u only have 1 white belt ninja then when you attack a boss or enemy you always win if u press skip , and you unlock a secret achivement called "never judge a ninja by its belt "
when your level 25 you fight the first bosses sister
631/2
Level 18 and it will appear on the main screen every 10 minutes
level 21
I think its level 15
never knew there was that function, but i assume your friend can not be a sensei on ninja warz. - level 101.
Get the highest level ninja and weapons. Along with as many ninja as you can get.
the highest I've seen is level 2,417