This is the brute who couldn't manage to win his DB tourney until LV 27, after 100-something entries...
Needless to say, I chose a new destiny for Ripper, and it turned out to be perfect for a ninja/stat machine. High HP + high strength + high speed + multi-hit weapons = perfect ninja. Besides the knife, Shuriken and Impact, all other level-up bonuses I chose for him have been stat-related upgrades. Turns out that those are the only two weapons he'll ever need, along with his mighty fist.
Ripper Tournament Final (LV 20 def. LV 23)
Now I'm prepared to do the same thing over for Thumper. Would it be nice if he had a pet-repelling skill, or a shield, or Increvable, or Sang-chaud? Definitely, but no such luck so far. In any case, the moral of the story is that even the worst brute in existence can be turned around.
Any thoughts/comments you'd like to add?