My current build that I'm using for "Abigor the Executioner" and "Moloch the Destroyer" below. The build can accomodate an exotic weapon user or a martial/simple weapon user. You end up with improved disarm by 20 if you choose the martial/simple weapon route.
Half-ogre
Str: 18 + 6 = 24
Dex: 14 - 2 = 12
Con: 8 + 2 = 10
Int: 15 - 2 = 13
Wis: 8 - 2 = 6
Cha: 8 - 2 = 6
1. Fighter: Dodge, Mobility (can select at level because Dex penalty is applied after logging in)
2. Fighter: Expertise
3. Fighter: Exotic Weapon Prof. OR Weapon Focus
4. Fighter: +1 Dex, Weapon Focus OR Blind Fight
5. Fighter
6. Fighter: Whirlwind Attack, Spring Attack
7. WM: Weapon of Choice
8. WM: +1 Str
9. WM: Improved Critical
10. WM
11. WM: Superior Weapon Focus, Ki Critical
12. WM: Knockdown, +1 Str
13. WM: Increased Multiplier
14. WM
15. WM: Improved Knockdown
16. WM: +1 Str
17. Fighter
18. Fighter: Weapon Specialization, Blind Fight OR Disarm
19. Fighter
20. Fighter: Disarm OR Improved Disarm, +1 Str
Post-20 You can either do the WM 3; Fighter 2; WM 15 OR You can distribute 10 levels of Rogue in there for tumble, improved evasion and uncanny dodge.