In the comics, the Chaste was Stick's group that Matt was being groomed for. Master Izo is a 500 year old samurai who was a founding member of the Hand before they became a demon-worshipping ninja cult, at which point he split off and formed the Chaste to fight them. Shortly thereafter, his followers kicked him out due to his drinking and gambling, and Stick took over.
Izo was a samuraiStick was a master of many different East Asian martial arts, so perhaps Matt would have a quilt-work style incorporating features of many arts with distinctive transition moves between dissimilar styles?
Neither the Chaste nor the Hand are named in the series, but Nobu wore the Hand's distinctive red gi, and Stick was seen conferring with Stone, who was his second in command within the Chaste.
Re: Matt's fighting style
Izo was a samuraiStick was a master of many different East Asian martial arts, so perhaps Matt would have a quilt-work style incorporating features of many arts with distinctive transition moves between dissimilar styles?
Neither the Chaste nor the Hand are named in the series, but Nobu wore the Hand's distinctive red gi, and Stick was seen conferring with Stone, who was his second in command within the Chaste.