In this case, maybe a Thai fighter.
Squat thrusters and kettlebell swings can teach power transfer from lower to upper body and muscle co-ordination.
For the towel pullups, soak the towel in water after every other set but do not wring the water out.Do your pullups with the soaked towel.This can improve grip and finger strength.
Try some of these exercises.These are pure functional strength exercises.
1)Dumbbell squat Thrusters
2)Kettlebell swings
3)Towel pullups
http://www.youtube.com/watch?v=_h1QcHTkwdIKettlebell swing
http://www.youtube.com/watch?v=_h1QcHTkwdISquat thrusters
http://www.youtube.com/watch?v=UIY3gWaOlUkTowel pullups(Remeber to soak in water)
http://www.youtube.com/user/SteveCotterMedia<--All the exercises here are very physical challenging, try them.