Brando? Are you sure it is not Bondo, the auto body filler? It is a paste you use to fill in small holes, dents, etc. and you can sand it smooth and paint it.
Ah yes, of course. Marlon's name is synonymous with modding... but I don't think that is what he is referring to in this instance.
No, it is not a modeling puddy, its for filling holes. Its far too brittle for making something large out of. But it can be molded around any shape you want.