Character : http://steamcommunity.com/sharedfiles/filedetails/?id=614465844
The shield was downloaded from tf3dm without any textures ( i've made some red ones ).
Anyway, i have checked now the scaling and yes, that shield was scaled at 100 CM because was HUGE. I have replaced the shield with Models/Pipes/pipe_flange.mdl ( default model with leadwerks ) which is scaled at 1,1,1 and i have the same result, can't see the 'shield'.
--EDIT: I have tested with crawler, it is working perfectly. It is also working on the other character, i have noticed that i didn't attached to a bone but to a node or something like that. I have attached it to a finger and is working. The only issue now is that the "shield" is rotating around the character's finger but i guess that this is another lesson to learn
Thank you very much for your help macklebee, i've just made another step from those 1M steps i have to make to create my Skyrim clone