Asses and legs are the parts that get me the most, I can handle fingers, mouths and other hard parts, but the part where the legs conects to the butt is the worst. I dont understand how Nintendo did that rigging.
It's usually pretty easy, the way I weight them makes the butt bend great but the crotch looks awkward ._.
The way I'm doing it with Shikumaru is each leg has it's own half of the entire waist. It's fixed the 'awkward' look of how those crotch vertexes move but now the buts giving me issues XD
And keep in mind nintendo had hundreds or at least dozens of people working on the game.
We are mostly young adults using a program and method that is far inferior to what Ninty uses to rig their models.
I'm actually okay with hands too, it's the wrists and elbows that tick me off the most with the CON Wii models. (I'd get better naruto game models but that's the only ones I can rip from, they're practically unchanged from each game in the series I think anyway...)
Although the general idea is to try and get it to bend the way it does in RL (the butt) or as close as you can, tis how I do it.